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Finding the Fourth Proportional to 12,387.00, 17,089.92 and 7,008.69

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Solution

The fourth proportional to 12,387.00, 17,089.92 and 7,008.69 is: 9,669.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.00 : 17,089.92 = 7,008.69 : x
  2. Step 2: Convert to fraction form
    12,387.00/17,089.92 = 7,008.69/x
  3. Step 3: Cross multiply
    12,387.00x = 17,089.92 × 7,008.69
  4. Step 4: Simplify right side
    12,387.00x = 119,777,972.96
  5. Step 5: Solve for x
    x = 119,777,972.96/12,387.00
  6. Step 6: Final answer
    x = 9,669.65

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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.