Home / 20,550.07-30,825.10-8,705.71

Finding the Fourth Proportional to 20,550.07, 30,825.10 and 8,705.71

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Solution

The fourth proportional to 20,550.07, 30,825.10 and 8,705.71 is: 13,058.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.07 : 30,825.10 = 8,705.71 : x
  2. Step 2: Convert to fraction form
    20,550.07/30,825.10 = 8,705.71/x
  3. Step 3: Cross multiply
    20,550.07x = 30,825.10 × 8,705.71
  4. Step 4: Simplify right side
    20,550.07x = 268,354,227.20
  5. Step 5: Solve for x
    x = 268,354,227.20/20,550.07
  6. Step 6: Final answer
    x = 13,058.56

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.