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Finding the Fourth Proportional to 14,865.52, 20,515.02 and 8,151.70

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Solution

The fourth proportional to 14,865.52, 20,515.02 and 8,151.70 is: 11,249.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,865.52 : 20,515.02 = 8,151.70 : x
  2. Step 2: Convert to fraction form
    14,865.52/20,515.02 = 8,151.70/x
  3. Step 3: Cross multiply
    14,865.52x = 20,515.02 × 8,151.70
  4. Step 4: Simplify right side
    14,865.52x = 167,232,288.53
  5. Step 5: Solve for x
    x = 167,232,288.53/14,865.52
  6. Step 6: Final answer
    x = 11,249.68

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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.