Home / 31,272.03-43,162.10-19,938.92

Finding the Fourth Proportional to 31,272.03, 43,162.10 and 19,938.92

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Solution

The fourth proportional to 31,272.03, 43,162.10 and 19,938.92 is: 27,519.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,272.03 : 43,162.10 = 19,938.92 : x
  2. Step 2: Convert to fraction form
    31,272.03/43,162.10 = 19,938.92/x
  3. Step 3: Cross multiply
    31,272.03x = 43,162.10 × 19,938.92
  4. Step 4: Simplify right side
    31,272.03x = 860,605,658.93
  5. Step 5: Solve for x
    x = 860,605,658.93/31,272.03
  6. Step 6: Final answer
    x = 27,519.98

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Double scale
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Similar ratio
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1.5x scale

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.