Home / 28,663.18-39,553.40-15,915.62

Finding the Fourth Proportional to 28,663.18, 39,553.40 and 15,915.62

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Solution

The fourth proportional to 28,663.18, 39,553.40 and 15,915.62 is: 21,962.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.18 : 39,553.40 = 15,915.62 : x
  2. Step 2: Convert to fraction form
    28,663.18/39,553.40 = 15,915.62/x
  3. Step 3: Cross multiply
    28,663.18x = 39,553.40 × 15,915.62
  4. Step 4: Simplify right side
    28,663.18x = 629,516,884.11
  5. Step 5: Solve for x
    x = 629,516,884.11/28,663.18
  6. Step 6: Final answer
    x = 21,962.56

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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.