Home / 22,890.10-31,584.66-12,818.97

Finding the Fourth Proportional to 22,890.10, 31,584.66 and 12,818.97

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Solution

The fourth proportional to 22,890.10, 31,584.66 and 12,818.97 is: 17,688.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,890.10 : 31,584.66 = 12,818.97 : x
  2. Step 2: Convert to fraction form
    22,890.10/31,584.66 = 12,818.97/x
  3. Step 3: Cross multiply
    22,890.10x = 31,584.66 × 12,818.97
  4. Step 4: Simplify right side
    22,890.10x = 404,882,809.00
  5. Step 5: Solve for x
    x = 404,882,809.00/22,890.10
  6. Step 6: Final answer
    x = 17,688.12

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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.