Home / 13,139.60-19,708.88-8,949.66

Finding the Fourth Proportional to 13,139.60, 19,708.88 and 8,949.66

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Solution

The fourth proportional to 13,139.60, 19,708.88 and 8,949.66 is: 13,424.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.60 : 19,708.88 = 8,949.66 : x
  2. Step 2: Convert to fraction form
    13,139.60/19,708.88 = 8,949.66/x
  3. Step 3: Cross multiply
    13,139.60x = 19,708.88 × 8,949.66
  4. Step 4: Simplify right side
    13,139.60x = 176,387,774.98
  5. Step 5: Solve for x
    x = 176,387,774.98/13,139.60
  6. Step 6: Final answer
    x = 13,424.14

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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.