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Finding the Fourth Proportional to 12,654.16, 18,965.82 and 8,957.46

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Solution

The fourth proportional to 12,654.16, 18,965.82 and 8,957.46 is: 13,425.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.16 : 18,965.82 = 8,957.46 : x
  2. Step 2: Convert to fraction form
    12,654.16/18,965.82 = 8,957.46/x
  3. Step 3: Cross multiply
    12,654.16x = 18,965.82 × 8,957.46
  4. Step 4: Simplify right side
    12,654.16x = 169,885,574.02
  5. Step 5: Solve for x
    x = 169,885,574.02/12,654.16
  6. Step 6: Final answer
    x = 13,425.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.