Home / 28,168,064,425.89-38,872,861,137.90-15,481,249,782.21

Finding the Fourth Proportional to 28,168,064,425.89, 38,872,861,137.90 and 15,481,249,782.21

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Solution

The fourth proportional to 28,168,064,425.89, 38,872,861,137.90 and 15,481,249,782.21 is: 21,364,637,055.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168,064,425.89 : 38,872,861,137.90 = 15,481,249,782.21 : x
  2. Step 2: Convert to fraction form
    28,168,064,425.89/38,872,861,137.90 = 15,481,249,782.21/x
  3. Step 3: Cross multiply
    28,168,064,425.89x = 38,872,861,137.90 × 15,481,249,782.21
  4. Step 4: Simplify right side
    28,168,064,425.89x = 601,800,473,024,993,951,744
  5. Step 5: Solve for x
    x = 601,800,473,024,993,951,744/28,168,064,425.89
  6. Step 6: Final answer
    x = 21,364,637,055.85

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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.