Home / 21,306.60-31,964.52-8,158.97

Finding the Fourth Proportional to 21,306.60, 31,964.52 and 8,158.97

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Solution

The fourth proportional to 21,306.60, 31,964.52 and 8,158.97 is: 12,240.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.60 : 31,964.52 = 8,158.97 : x
  2. Step 2: Convert to fraction form
    21,306.60/31,964.52 = 8,158.97/x
  3. Step 3: Cross multiply
    21,306.60x = 31,964.52 × 8,158.97
  4. Step 4: Simplify right side
    21,306.60x = 260,797,703.26
  5. Step 5: Solve for x
    x = 260,797,703.26/21,306.60
  6. Step 6: Final answer
    x = 12,240.23

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1.5x scale

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.