Home / 31,151.22-42,988.30-17,722.44

Finding the Fourth Proportional to 31,151.22, 42,988.30 and 17,722.44

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Solution

The fourth proportional to 31,151.22, 42,988.30 and 17,722.44 is: 24,456.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,151.22 : 42,988.30 = 17,722.44 : x
  2. Step 2: Convert to fraction form
    31,151.22/42,988.30 = 17,722.44/x
  3. Step 3: Cross multiply
    31,151.22x = 42,988.30 × 17,722.44
  4. Step 4: Simplify right side
    31,151.22x = 761,857,567.45
  5. Step 5: Solve for x
    x = 761,857,567.45/31,151.22
  6. Step 6: Final answer
    x = 24,456.75

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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.