Home / 20,870.59-31,305.94-6,079.87

Finding the Fourth Proportional to 20,870.59, 31,305.94 and 6,079.87

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Solution

The fourth proportional to 20,870.59, 31,305.94 and 6,079.87 is: 9,119.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.59 : 31,305.94 = 6,079.87 : x
  2. Step 2: Convert to fraction form
    20,870.59/31,305.94 = 6,079.87/x
  3. Step 3: Cross multiply
    20,870.59x = 31,305.94 × 6,079.87
  4. Step 4: Simplify right side
    20,870.59x = 190,335,951.96
  5. Step 5: Solve for x
    x = 190,335,951.96/20,870.59
  6. Step 6: Final answer
    x = 9,119.82

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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.