Home / 28,247.48-38,981.42-15,500.88

Finding the Fourth Proportional to 28,247.48, 38,981.42 and 15,500.88

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Solution

The fourth proportional to 28,247.48, 38,981.42 and 15,500.88 is: 21,391.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.48 : 38,981.42 = 15,500.88 : x
  2. Step 2: Convert to fraction form
    28,247.48/38,981.42 = 15,500.88/x
  3. Step 3: Cross multiply
    28,247.48x = 38,981.42 × 15,500.88
  4. Step 4: Simplify right side
    28,247.48x = 604,246,294.27
  5. Step 5: Solve for x
    x = 604,246,294.27/28,247.48
  6. Step 6: Final answer
    x = 21,391.16

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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.