Home / 28,127.97-38,817.17-15,381.96

Finding the Fourth Proportional to 28,127.97, 38,817.17 and 15,381.96

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Solution

The fourth proportional to 28,127.97, 38,817.17 and 15,381.96 is: 21,227.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.97 : 38,817.17 = 15,381.96 : x
  2. Step 2: Convert to fraction form
    28,127.97/38,817.17 = 15,381.96/x
  3. Step 3: Cross multiply
    28,127.97x = 38,817.17 × 15,381.96
  4. Step 4: Simplify right side
    28,127.97x = 597,084,079.34
  5. Step 5: Solve for x
    x = 597,084,079.34/28,127.97
  6. Step 6: Final answer
    x = 21,227.41

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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.