Home / 40,990.38-61,479.45-11,405.13

Finding the Fourth Proportional to 40,990.38, 61,479.45 and 11,405.13

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Solution

The fourth proportional to 40,990.38, 61,479.45 and 11,405.13 is: 17,105.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,990.38 : 61,479.45 = 11,405.13 : x
  2. Step 2: Convert to fraction form
    40,990.38/61,479.45 = 11,405.13/x
  3. Step 3: Cross multiply
    40,990.38x = 61,479.45 × 11,405.13
  4. Step 4: Simplify right side
    40,990.38x = 701,181,119.58
  5. Step 5: Solve for x
    x = 701,181,119.58/40,990.38
  6. Step 6: Final answer
    x = 17,105.99

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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.