Home / 28,132.08-38,821.83-15,384.97

Finding the Fourth Proportional to 28,132.08, 38,821.83 and 15,384.97

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Solution

The fourth proportional to 28,132.08, 38,821.83 and 15,384.97 is: 21,231.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.08 : 38,821.83 = 15,384.97 : x
  2. Step 2: Convert to fraction form
    28,132.08/38,821.83 = 15,384.97/x
  3. Step 3: Cross multiply
    28,132.08x = 38,821.83 × 15,384.97
  4. Step 4: Simplify right side
    28,132.08x = 597,272,691.18
  5. Step 5: Solve for x
    x = 597,272,691.18/28,132.08
  6. Step 6: Final answer
    x = 21,231.02

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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.