Home / 21,062.97-31,585.68-8,574.52

Finding the Fourth Proportional to 21,062.97, 31,585.68 and 8,574.52

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Solution

The fourth proportional to 21,062.97, 31,585.68 and 8,574.52 is: 12,858.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.97 : 31,585.68 = 8,574.52 : x
  2. Step 2: Convert to fraction form
    21,062.97/31,585.68 = 8,574.52/x
  3. Step 3: Cross multiply
    21,062.97x = 31,585.68 × 8,574.52
  4. Step 4: Simplify right side
    21,062.97x = 270,832,044.87
  5. Step 5: Solve for x
    x = 270,832,044.87/21,062.97
  6. Step 6: Final answer
    x = 12,858.21

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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.