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Finding the Fourth Proportional to 14,750.75, 20,356.52 and 8,377.61

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Solution

The fourth proportional to 14,750.75, 20,356.52 and 8,377.61 is: 11,561.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,750.75 : 20,356.52 = 8,377.61 : x
  2. Step 2: Convert to fraction form
    14,750.75/20,356.52 = 8,377.61/x
  3. Step 3: Cross multiply
    14,750.75x = 20,356.52 × 8,377.61
  4. Step 4: Simplify right side
    14,750.75x = 170,538,841.85
  5. Step 5: Solve for x
    x = 170,538,841.85/14,750.75
  6. Step 6: Final answer
    x = 11,561.37

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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.