Home / 22,511.30-31,065.87-12,439.64

Finding the Fourth Proportional to 22,511.30, 31,065.87 and 12,439.64

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Solution

The fourth proportional to 22,511.30, 31,065.87 and 12,439.64 is: 17,166.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,511.30 : 31,065.87 = 12,439.64 : x
  2. Step 2: Convert to fraction form
    22,511.30/31,065.87 = 12,439.64/x
  3. Step 3: Cross multiply
    22,511.30x = 31,065.87 × 12,439.64
  4. Step 4: Simplify right side
    22,511.30x = 386,448,239.09
  5. Step 5: Solve for x
    x = 386,448,239.09/22,511.30
  6. Step 6: Final answer
    x = 17,166.86

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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.