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Finding the Fourth Proportional to 12,521.52, 18,785.88 and 5,938.65

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Solution

The fourth proportional to 12,521.52, 18,785.88 and 5,938.65 is: 8,909.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.52 : 18,785.88 = 5,938.65 : x
  2. Step 2: Convert to fraction form
    12,521.52/18,785.88 = 5,938.65/x
  3. Step 3: Cross multiply
    12,521.52x = 18,785.88 × 5,938.65
  4. Step 4: Simplify right side
    12,521.52x = 111,562,766.26
  5. Step 5: Solve for x
    x = 111,562,766.26/12,521.52
  6. Step 6: Final answer
    x = 8,909.68

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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.