Home / 22,511.22-31,065.82-12,439.89

Finding the Fourth Proportional to 22,511.22, 31,065.82 and 12,439.89

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Solution

The fourth proportional to 22,511.22, 31,065.82 and 12,439.89 is: 17,167.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,511.22 : 31,065.82 = 12,439.89 : x
  2. Step 2: Convert to fraction form
    22,511.22/31,065.82 = 12,439.89/x
  3. Step 3: Cross multiply
    22,511.22x = 31,065.82 × 12,439.89
  4. Step 4: Simplify right side
    22,511.22x = 386,455,468.96
  5. Step 5: Solve for x
    x = 386,455,468.96/22,511.22
  6. Step 6: Final answer
    x = 17,167.24

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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.