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Finding the Fourth Proportional to 12,387.08, 17,098.74 and 9,047.09

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Solution

The fourth proportional to 12,387.08, 17,098.74 and 9,047.09 is: 12,488.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.08 : 17,098.74 = 9,047.09 : x
  2. Step 2: Convert to fraction form
    12,387.08/17,098.74 = 9,047.09/x
  3. Step 3: Cross multiply
    12,387.08x = 17,098.74 × 9,047.09
  4. Step 4: Simplify right side
    12,387.08x = 154,693,754.17
  5. Step 5: Solve for x
    x = 154,693,754.17/12,387.08
  6. Step 6: Final answer
    x = 12,488.32

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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.