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Finding the Fourth Proportional to 13,672.52, 20,508.78 and 7,825.07

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Solution

The fourth proportional to 13,672.52, 20,508.78 and 7,825.07 is: 11,737.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.52 : 20,508.78 = 7,825.07 : x
  2. Step 2: Convert to fraction form
    13,672.52/20,508.78 = 7,825.07/x
  3. Step 3: Cross multiply
    13,672.52x = 20,508.78 × 7,825.07
  4. Step 4: Simplify right side
    13,672.52x = 160,482,536.57
  5. Step 5: Solve for x
    x = 160,482,536.57/13,672.52
  6. Step 6: Final answer
    x = 11,737.60

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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.