Home / 31,024.88-42,821.62-18,456.92

Finding the Fourth Proportional to 31,024.88, 42,821.62 and 18,456.92

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Solution

The fourth proportional to 31,024.88, 42,821.62 and 18,456.92 is: 25,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,024.88 : 42,821.62 = 18,456.92 : x
  2. Step 2: Convert to fraction form
    31,024.88/42,821.62 = 18,456.92/x
  3. Step 3: Cross multiply
    31,024.88x = 42,821.62 × 18,456.92
  4. Step 4: Simplify right side
    31,024.88x = 790,354,954.36
  5. Step 5: Solve for x
    x = 790,354,954.36/31,024.88
  6. Step 6: Final answer
    x = 25,474.88

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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.