Home / 13,386.13-20,079.32-5,486.61

Finding the Fourth Proportional to 13,386.13, 20,079.32 and 5,486.61

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Solution

The fourth proportional to 13,386.13, 20,079.32 and 5,486.61 is: 8,229.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.13 : 20,079.32 = 5,486.61 : x
  2. Step 2: Convert to fraction form
    13,386.13/20,079.32 = 5,486.61/x
  3. Step 3: Cross multiply
    13,386.13x = 20,079.32 × 5,486.61
  4. Step 4: Simplify right side
    13,386.13x = 110,167,397.91
  5. Step 5: Solve for x
    x = 110,167,397.91/13,386.13
  6. Step 6: Final answer
    x = 8,229.97

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1.5x scale

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.