Home / 28,871.26-43,306.90-21,023.72

Finding the Fourth Proportional to 28,871.26, 43,306.90 and 21,023.72

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Solution

The fourth proportional to 28,871.26, 43,306.90 and 21,023.72 is: 31,535.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,871.26 : 43,306.90 = 21,023.72 : x
  2. Step 2: Convert to fraction form
    28,871.26/43,306.90 = 21,023.72/x
  3. Step 3: Cross multiply
    28,871.26x = 43,306.90 × 21,023.72
  4. Step 4: Simplify right side
    28,871.26x = 910,472,139.67
  5. Step 5: Solve for x
    x = 910,472,139.67/28,871.26
  6. Step 6: Final answer
    x = 31,535.59

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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.