Home / 12,748-19,119.28-5,350.56

Finding the Fourth Proportional to 12,748, 19,119.28 and 5,350.56

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Solution

The fourth proportional to 12,748, 19,119.28 and 5,350.56 is: 8,024.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748 : 19,119.28 = 5,350.56 : x
  2. Step 2: Convert to fraction form
    12,748/19,119.28 = 5,350.56/x
  3. Step 3: Cross multiply
    12,748x = 19,119.28 × 5,350.56
  4. Step 4: Simplify right side
    12,748x = 102,298,854.80
  5. Step 5: Solve for x
    x = 102,298,854.80/12,748
  6. Step 6: Final answer
    x = 8,024.70

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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.