Home / 20,262.59-27,928.90-13,545.77

Finding the Fourth Proportional to 20,262.59, 27,928.90 and 13,545.77

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Solution

The fourth proportional to 20,262.59, 27,928.90 and 13,545.77 is: 18,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,262.59 : 27,928.90 = 13,545.77 : x
  2. Step 2: Convert to fraction form
    20,262.59/27,928.90 = 13,545.77/x
  3. Step 3: Cross multiply
    20,262.59x = 27,928.90 × 13,545.77
  4. Step 4: Simplify right side
    20,262.59x = 378,318,455.75
  5. Step 5: Solve for x
    x = 378,318,455.75/20,262.59
  6. Step 6: Final answer
    x = 18,670.78

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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.