Home / 19,350.40-29,029.76-8,257.28

Finding the Fourth Proportional to 19,350.40, 29,029.76 and 8,257.28

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Solution

The fourth proportional to 19,350.40, 29,029.76 and 8,257.28 is: 12,387.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,350.40 : 29,029.76 = 8,257.28 : x
  2. Step 2: Convert to fraction form
    19,350.40/29,029.76 = 8,257.28/x
  3. Step 3: Cross multiply
    19,350.40x = 29,029.76 × 8,257.28
  4. Step 4: Simplify right side
    19,350.40x = 239,706,856.65
  5. Step 5: Solve for x
    x = 239,706,856.65/19,350.40
  6. Step 6: Final answer
    x = 12,387.70

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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.