Home / 31,613.84-43,607.82-20,279.52

Finding the Fourth Proportional to 31,613.84, 43,607.82 and 20,279.52

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Solution

The fourth proportional to 31,613.84, 43,607.82 and 20,279.52 is: 27,973.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,613.84 : 43,607.82 = 20,279.52 : x
  2. Step 2: Convert to fraction form
    31,613.84/43,607.82 = 20,279.52/x
  3. Step 3: Cross multiply
    31,613.84x = 43,607.82 × 20,279.52
  4. Step 4: Simplify right side
    31,613.84x = 884,345,657.85
  5. Step 5: Solve for x
    x = 884,345,657.85/31,613.84
  6. Step 6: Final answer
    x = 27,973.37

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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.