Home / 13,384.29-18,470.31-8,079.12

Finding the Fourth Proportional to 13,384.29, 18,470.31 and 8,079.12

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Solution

The fourth proportional to 13,384.29, 18,470.31 and 8,079.12 is: 11,149.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.29 : 18,470.31 = 8,079.12 : x
  2. Step 2: Convert to fraction form
    13,384.29/18,470.31 = 8,079.12/x
  3. Step 3: Cross multiply
    13,384.29x = 18,470.31 × 8,079.12
  4. Step 4: Simplify right side
    13,384.29x = 149,223,850.93
  5. Step 5: Solve for x
    x = 149,223,850.93/13,384.29
  6. Step 6: Final answer
    x = 11,149.18

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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.