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Finding the Fourth Proportional to 12,353.40, 17,049.32 and 7,317.20

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Solution

The fourth proportional to 12,353.40, 17,049.32 and 7,317.20 is: 10,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,353.40 : 17,049.32 = 7,317.20 : x
  2. Step 2: Convert to fraction form
    12,353.40/17,049.32 = 7,317.20/x
  3. Step 3: Cross multiply
    12,353.40x = 17,049.32 × 7,317.20
  4. Step 4: Simplify right side
    12,353.40x = 124,753,284.30
  5. Step 5: Solve for x
    x = 124,753,284.30/12,353.40
  6. Step 6: Final answer
    x = 10,098.70

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Double scale
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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.