Home / 20,908.80-31,367.70-6,116.58

Finding the Fourth Proportional to 20,908.80, 31,367.70 and 6,116.58

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Solution

The fourth proportional to 20,908.80, 31,367.70 and 6,116.58 is: 9,176.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.80 : 31,367.70 = 6,116.58 : x
  2. Step 2: Convert to fraction form
    20,908.80/31,367.70 = 6,116.58/x
  3. Step 3: Cross multiply
    20,908.80x = 31,367.70 × 6,116.58
  4. Step 4: Simplify right side
    20,908.80x = 191,863,046.47
  5. Step 5: Solve for x
    x = 191,863,046.47/20,908.80
  6. Step 6: Final answer
    x = 9,176.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.