Home / 20,082.38-27,712.95-12,123.86

Finding the Fourth Proportional to 20,082.38, 27,712.95 and 12,123.86

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Solution

The fourth proportional to 20,082.38, 27,712.95 and 12,123.86 is: 16,730.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.38 : 27,712.95 = 12,123.86 : x
  2. Step 2: Convert to fraction form
    20,082.38/27,712.95 = 12,123.86/x
  3. Step 3: Cross multiply
    20,082.38x = 27,712.95 × 12,123.86
  4. Step 4: Simplify right side
    20,082.38x = 335,987,925.99
  5. Step 5: Solve for x
    x = 335,987,925.99/20,082.38
  6. Step 6: Final answer
    x = 16,730.48

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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.