Home / 31,149.90-42,963.30-19,208.88

Finding the Fourth Proportional to 31,149.90, 42,963.30 and 19,208.88

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Solution

The fourth proportional to 31,149.90, 42,963.30 and 19,208.88 is: 26,493.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,149.90 : 42,963.30 = 19,208.88 : x
  2. Step 2: Convert to fraction form
    31,149.90/42,963.30 = 19,208.88/x
  3. Step 3: Cross multiply
    31,149.90x = 42,963.30 × 19,208.88
  4. Step 4: Simplify right side
    31,149.90x = 825,276,874.10
  5. Step 5: Solve for x
    x = 825,276,874.10/31,149.90
  6. Step 6: Final answer
    x = 26,493.72

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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.