Home / 28,168,064,422.89-38,872,861,133.78-15,481,249,779.21

Finding the Fourth Proportional to 28,168,064,422.89, 38,872,861,133.78 and 15,481,249,779.21

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Solution

The fourth proportional to 28,168,064,422.89, 38,872,861,133.78 and 15,481,249,779.21 is: 21,364,637,051.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168,064,422.89 : 38,872,861,133.78 = 15,481,249,779.21 : x
  2. Step 2: Convert to fraction form
    28,168,064,422.89/38,872,861,133.78 = 15,481,249,779.21/x
  3. Step 3: Cross multiply
    28,168,064,422.89x = 38,872,861,133.78 × 15,481,249,779.21
  4. Step 4: Simplify right side
    28,168,064,422.89x = 601,800,472,844,515,147,776
  5. Step 5: Solve for x
    x = 601,800,472,844,515,147,776/28,168,064,422.89
  6. Step 6: Final answer
    x = 21,364,637,051.72

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.