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Finding the Fourth Proportional to 14,934.13, 20,608.94 and 8,219.61

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Solution

The fourth proportional to 14,934.13, 20,608.94 and 8,219.61 is: 11,342.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,934.13 : 20,608.94 = 8,219.61 : x
  2. Step 2: Convert to fraction form
    14,934.13/20,608.94 = 8,219.61/x
  3. Step 3: Cross multiply
    14,934.13x = 20,608.94 × 8,219.61
  4. Step 4: Simplify right side
    14,934.13x = 169,397,428.76
  5. Step 5: Solve for x
    x = 169,397,428.76/14,934.13
  6. Step 6: Final answer
    x = 11,342.97

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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.