Home / 21,359.16-31,995.68-17,883.90

Finding the Fourth Proportional to 21,359.16, 31,995.68 and 17,883.90

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Solution

The fourth proportional to 21,359.16, 31,995.68 and 17,883.90 is: 26,789.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359.16 : 31,995.68 = 17,883.90 : x
  2. Step 2: Convert to fraction form
    21,359.16/31,995.68 = 17,883.90/x
  3. Step 3: Cross multiply
    21,359.16x = 31,995.68 × 17,883.90
  4. Step 4: Simplify right side
    21,359.16x = 572,207,452.13
  5. Step 5: Solve for x
    x = 572,207,452.13/21,359.16
  6. Step 6: Final answer
    x = 26,789.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.