Home / 12,387.34-17,070.92-12,159.61

Finding the Fourth Proportional to 12,387.34, 17,070.92 and 12,159.61

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Solution

The fourth proportional to 12,387.34, 17,070.92 and 12,159.61 is: 16,757.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.34 : 17,070.92 = 12,159.61 : x
  2. Step 2: Convert to fraction form
    12,387.34/17,070.92 = 12,159.61/x
  3. Step 3: Cross multiply
    12,387.34x = 17,070.92 × 12,159.61
  4. Step 4: Simplify right side
    12,387.34x = 207,575,717.26
  5. Step 5: Solve for x
    x = 207,575,717.26/12,387.34
  6. Step 6: Final answer
    x = 16,757.09

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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.