Home / 22,405.11-30,917.86-12,331.59

Finding the Fourth Proportional to 22,405.11, 30,917.86 and 12,331.59

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Solution

The fourth proportional to 22,405.11, 30,917.86 and 12,331.59 is: 17,016.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,405.11 : 30,917.86 = 12,331.59 : x
  2. Step 2: Convert to fraction form
    22,405.11/30,917.86 = 12,331.59/x
  3. Step 3: Cross multiply
    22,405.11x = 30,917.86 × 12,331.59
  4. Step 4: Simplify right side
    22,405.11x = 381,266,373.20
  5. Step 5: Solve for x
    x = 381,266,373.20/22,405.11
  6. Step 6: Final answer
    x = 17,016.94

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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.