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Finding the Fourth Proportional to 12,565.53, 18,847.89 and 3,799.71

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Solution

The fourth proportional to 12,565.53, 18,847.89 and 3,799.71 is: 5,699.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,565.53 : 18,847.89 = 3,799.71 : x
  2. Step 2: Convert to fraction form
    12,565.53/18,847.89 = 3,799.71/x
  3. Step 3: Cross multiply
    12,565.53x = 18,847.89 × 3,799.71
  4. Step 4: Simplify right side
    12,565.53x = 71,616,516.11
  5. Step 5: Solve for x
    x = 71,616,516.11/12,565.53
  6. Step 6: Final answer
    x = 5,699.44

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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.