Home / 28,915.68-43,358.16-13,320

Finding the Fourth Proportional to 28,915.68, 43,358.16 and 13,320

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Solution

The fourth proportional to 28,915.68, 43,358.16 and 13,320 is: 19,972.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.68 : 43,358.16 = 13,320 : x
  2. Step 2: Convert to fraction form
    28,915.68/43,358.16 = 13,320/x
  3. Step 3: Cross multiply
    28,915.68x = 43,358.16 × 13,320
  4. Step 4: Simplify right side
    28,915.68x = 577,530,691.20
  5. Step 5: Solve for x
    x = 577,530,691.20/28,915.68
  6. Step 6: Final answer
    x = 19,972.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.