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Finding the Fourth Proportional to 14,685.52, 20,265.06 and 8,397.88

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Solution

The fourth proportional to 14,685.52, 20,265.06 and 8,397.88 is: 11,588.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,685.52 : 20,265.06 = 8,397.88 : x
  2. Step 2: Convert to fraction form
    14,685.52/20,265.06 = 8,397.88/x
  3. Step 3: Cross multiply
    14,685.52x = 20,265.06 × 8,397.88
  4. Step 4: Simplify right side
    14,685.52x = 170,183,542.07
  5. Step 5: Solve for x
    x = 170,183,542.07/14,685.52
  6. Step 6: Final answer
    x = 11,588.53

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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.