Home / 20,645.18-28,494.89-13,572.26

Finding the Fourth Proportional to 20,645.18, 28,494.89 and 13,572.26

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Solution

The fourth proportional to 20,645.18, 28,494.89 and 13,572.26 is: 18,732.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.18 : 28,494.89 = 13,572.26 : x
  2. Step 2: Convert to fraction form
    20,645.18/28,494.89 = 13,572.26/x
  3. Step 3: Cross multiply
    20,645.18x = 28,494.89 × 13,572.26
  4. Step 4: Simplify right side
    20,645.18x = 386,739,845.42
  5. Step 5: Solve for x
    x = 386,739,845.42/20,645.18
  6. Step 6: Final answer
    x = 18,732.70

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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.