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Finding the Fourth Proportional to 19,398.78, 29,098.18 and 6,251.12

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Solution

The fourth proportional to 19,398.78, 29,098.18 and 6,251.12 is: 9,376.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,398.78 : 29,098.18 = 6,251.12 : x
  2. Step 2: Convert to fraction form
    19,398.78/29,098.18 = 6,251.12/x
  3. Step 3: Cross multiply
    19,398.78x = 29,098.18 × 6,251.12
  4. Step 4: Simplify right side
    19,398.78x = 181,896,214.96
  5. Step 5: Solve for x
    x = 181,896,214.96/19,398.78
  6. Step 6: Final answer
    x = 9,376.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.