Home / 28,084.32-38,755.62-15,508.80

Finding the Fourth Proportional to 28,084.32, 38,755.62 and 15,508.80

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Solution

The fourth proportional to 28,084.32, 38,755.62 and 15,508.80 is: 21,401.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084.32 : 38,755.62 = 15,508.80 : x
  2. Step 2: Convert to fraction form
    28,084.32/38,755.62 = 15,508.80/x
  3. Step 3: Cross multiply
    28,084.32x = 38,755.62 × 15,508.80
  4. Step 4: Simplify right side
    28,084.32x = 601,053,159.46
  5. Step 5: Solve for x
    x = 601,053,159.46/28,084.32
  6. Step 6: Final answer
    x = 21,401.73

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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.