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Finding the Fourth Proportional to 14,732.50, 20,330.85 and 8,108.50

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Solution

The fourth proportional to 14,732.50, 20,330.85 and 8,108.50 is: 11,189.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,732.50 : 20,330.85 = 8,108.50 : x
  2. Step 2: Convert to fraction form
    14,732.50/20,330.85 = 8,108.50/x
  3. Step 3: Cross multiply
    14,732.50x = 20,330.85 × 8,108.50
  4. Step 4: Simplify right side
    14,732.50x = 164,852,697.23
  5. Step 5: Solve for x
    x = 164,852,697.23/14,732.50
  6. Step 6: Final answer
    x = 11,189.73

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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.