Home / 28,088.14-38,761.62-15,512.89

Finding the Fourth Proportional to 28,088.14, 38,761.62 and 15,512.89

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Solution

The fourth proportional to 28,088.14, 38,761.62 and 15,512.89 is: 21,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.14 : 38,761.62 = 15,512.89 : x
  2. Step 2: Convert to fraction form
    28,088.14/38,761.62 = 15,512.89/x
  3. Step 3: Cross multiply
    28,088.14x = 38,761.62 × 15,512.89
  4. Step 4: Simplify right side
    28,088.14x = 601,304,747.28
  5. Step 5: Solve for x
    x = 601,304,747.28/28,088.14
  6. Step 6: Final answer
    x = 21,407.78

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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.