Home / 15,360,117.21-21,196,740.96-8,390,711.16

Finding the Fourth Proportional to 15,360,117.21, 21,196,740.96 and 8,390,711.16

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Solution

The fourth proportional to 15,360,117.21, 21,196,740.96 and 8,390,711.16 is: 11,579,060.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360,117.21 : 21,196,740.96 = 8,390,711.16 : x
  2. Step 2: Convert to fraction form
    15,360,117.21/21,196,740.96 = 8,390,711.16/x
  3. Step 3: Cross multiply
    15,360,117.21x = 21,196,740.96 × 8,390,711.16
  4. Step 4: Simplify right side
    15,360,117.21x = 177,855,730,928,701.12
  5. Step 5: Solve for x
    x = 177,855,730,928,701.12/15,360,117.21
  6. Step 6: Final answer
    x = 11,579,060.79

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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.