Home / 20,869.74-31,305.69-6,079.80

Finding the Fourth Proportional to 20,869.74, 31,305.69 and 6,079.80

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Solution

The fourth proportional to 20,869.74, 31,305.69 and 6,079.80 is: 9,120.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.74 : 31,305.69 = 6,079.80 : x
  2. Step 2: Convert to fraction form
    20,869.74/31,305.69 = 6,079.80/x
  3. Step 3: Cross multiply
    20,869.74x = 31,305.69 × 6,079.80
  4. Step 4: Simplify right side
    20,869.74x = 190,332,334.06
  5. Step 5: Solve for x
    x = 190,332,334.06/20,869.74
  6. Step 6: Final answer
    x = 9,120.01

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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.