Home / 20,644.62-28,501.36-13,591.54

Finding the Fourth Proportional to 20,644.62, 28,501.36 and 13,591.54

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Solution

The fourth proportional to 20,644.62, 28,501.36 and 13,591.54 is: 18,764.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.62 : 28,501.36 = 13,591.54 : x
  2. Step 2: Convert to fraction form
    20,644.62/28,501.36 = 13,591.54/x
  3. Step 3: Cross multiply
    20,644.62x = 28,501.36 × 13,591.54
  4. Step 4: Simplify right side
    20,644.62x = 387,377,374.49
  5. Step 5: Solve for x
    x = 387,377,374.49/20,644.62
  6. Step 6: Final answer
    x = 18,764.08

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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.