Home / 12,521.29-18,781.62-5,123.92

Finding the Fourth Proportional to 12,521.29, 18,781.62 and 5,123.92

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Solution

The fourth proportional to 12,521.29, 18,781.62 and 5,123.92 is: 7,685.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.29 : 18,781.62 = 5,123.92 : x
  2. Step 2: Convert to fraction form
    12,521.29/18,781.62 = 5,123.92/x
  3. Step 3: Cross multiply
    12,521.29x = 18,781.62 × 5,123.92
  4. Step 4: Simplify right side
    12,521.29x = 96,235,518.35
  5. Step 5: Solve for x
    x = 96,235,518.35/12,521.29
  6. Step 6: Final answer
    x = 7,685.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.