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Finding the Fourth Proportional to 14,523.28, 20,042.36 and 8,151.28

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Solution

The fourth proportional to 14,523.28, 20,042.36 and 8,151.28 is: 11,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,523.28 : 20,042.36 = 8,151.28 : x
  2. Step 2: Convert to fraction form
    14,523.28/20,042.36 = 8,151.28/x
  3. Step 3: Cross multiply
    14,523.28x = 20,042.36 × 8,151.28
  4. Step 4: Simplify right side
    14,523.28x = 163,370,888.22
  5. Step 5: Solve for x
    x = 163,370,888.22/14,523.28
  6. Step 6: Final answer
    x = 11,248.90

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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.