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Finding the Fourth Proportional to 12,358.98, 17,049.49 and 8,108.30

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Solution

The fourth proportional to 12,358.98, 17,049.49 and 8,108.30 is: 11,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358.98 : 17,049.49 = 8,108.30 : x
  2. Step 2: Convert to fraction form
    12,358.98/17,049.49 = 8,108.30/x
  3. Step 3: Cross multiply
    12,358.98x = 17,049.49 × 8,108.30
  4. Step 4: Simplify right side
    12,358.98x = 138,242,402.12
  5. Step 5: Solve for x
    x = 138,242,402.12/12,358.98
  6. Step 6: Final answer
    x = 11,185.58

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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.