Home / 13,324.13-18,387.89-7,660.71

Finding the Fourth Proportional to 13,324.13, 18,387.89 and 7,660.71

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Solution

The fourth proportional to 13,324.13, 18,387.89 and 7,660.71 is: 10,572.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.13 : 18,387.89 = 7,660.71 : x
  2. Step 2: Convert to fraction form
    13,324.13/18,387.89 = 7,660.71/x
  3. Step 3: Cross multiply
    13,324.13x = 18,387.89 × 7,660.71
  4. Step 4: Simplify right side
    13,324.13x = 140,864,254.50
  5. Step 5: Solve for x
    x = 140,864,254.50/13,324.13
  6. Step 6: Final answer
    x = 10,572.12

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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.