Home / 22,979.90-31,711.20-12,770.46

Finding the Fourth Proportional to 22,979.90, 31,711.20 and 12,770.46

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Solution

The fourth proportional to 22,979.90, 31,711.20 and 12,770.46 is: 17,622.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,979.90 : 31,711.20 = 12,770.46 : x
  2. Step 2: Convert to fraction form
    22,979.90/31,711.20 = 12,770.46/x
  3. Step 3: Cross multiply
    22,979.90x = 31,711.20 × 12,770.46
  4. Step 4: Simplify right side
    22,979.90x = 404,966,563.26
  5. Step 5: Solve for x
    x = 404,966,563.26/22,979.90
  6. Step 6: Final answer
    x = 17,622.64

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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.