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Finding the Fourth Proportional to 12,658.17, 18,966.15 and 8,953.03

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Solution

The fourth proportional to 12,658.17, 18,966.15 and 8,953.03 is: 13,414.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.17 : 18,966.15 = 8,953.03 : x
  2. Step 2: Convert to fraction form
    12,658.17/18,966.15 = 8,953.03/x
  3. Step 3: Cross multiply
    12,658.17x = 18,966.15 × 8,953.03
  4. Step 4: Simplify right side
    12,658.17x = 169,804,533.64
  5. Step 5: Solve for x
    x = 169,804,533.64/12,658.17
  6. Step 6: Final answer
    x = 13,414.62

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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.