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Finding the Fourth Proportional to 14,650.71, 20,229.55 and 13,531.19

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Solution

The fourth proportional to 14,650.71, 20,229.55 and 13,531.19 is: 18,683.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,650.71 : 20,229.55 = 13,531.19 : x
  2. Step 2: Convert to fraction form
    14,650.71/20,229.55 = 13,531.19/x
  3. Step 3: Cross multiply
    14,650.71x = 20,229.55 × 13,531.19
  4. Step 4: Simplify right side
    14,650.71x = 273,729,749.69
  5. Step 5: Solve for x
    x = 273,729,749.69/14,650.71
  6. Step 6: Final answer
    x = 18,683.72

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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.