Home / 22,979.14-31,711.10-12,907.73

Finding the Fourth Proportional to 22,979.14, 31,711.10 and 12,907.73

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Solution

The fourth proportional to 22,979.14, 31,711.10 and 12,907.73 is: 17,812.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,979.14 : 31,711.10 = 12,907.73 : x
  2. Step 2: Convert to fraction form
    22,979.14/31,711.10 = 12,907.73/x
  3. Step 3: Cross multiply
    22,979.14x = 31,711.10 × 12,907.73
  4. Step 4: Simplify right side
    22,979.14x = 409,318,331.54
  5. Step 5: Solve for x
    x = 409,318,331.54/22,979.14
  6. Step 6: Final answer
    x = 17,812.61

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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.