Home / 20,687.34-28,551.45-11,737.08

Finding the Fourth Proportional to 20,687.34, 28,551.45 and 11,737.08

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Solution

The fourth proportional to 20,687.34, 28,551.45 and 11,737.08 is: 16,198.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.34 : 28,551.45 = 11,737.08 : x
  2. Step 2: Convert to fraction form
    20,687.34/28,551.45 = 11,737.08/x
  3. Step 3: Cross multiply
    20,687.34x = 28,551.45 × 11,737.08
  4. Step 4: Simplify right side
    20,687.34x = 335,110,652.77
  5. Step 5: Solve for x
    x = 335,110,652.77/20,687.34
  6. Step 6: Final answer
    x = 16,198.83

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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.