Home / 31,149.80-42,990.84-17,718.46

Finding the Fourth Proportional to 31,149.80, 42,990.84 and 17,718.46

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Solution

The fourth proportional to 31,149.80, 42,990.84 and 17,718.46 is: 24,453.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,149.80 : 42,990.84 = 17,718.46 : x
  2. Step 2: Convert to fraction form
    31,149.80/42,990.84 = 17,718.46/x
  3. Step 3: Cross multiply
    31,149.80x = 42,990.84 × 17,718.46
  4. Step 4: Simplify right side
    31,149.80x = 761,731,478.91
  5. Step 5: Solve for x
    x = 761,731,478.91/31,149.80
  6. Step 6: Final answer
    x = 24,453.82

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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.