Home / 20,717.03-31,053.38-8,219.75

Finding the Fourth Proportional to 20,717.03, 31,053.38 and 8,219.75

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Solution

The fourth proportional to 20,717.03, 31,053.38 and 8,219.75 is: 12,320.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.03 : 31,053.38 = 8,219.75 : x
  2. Step 2: Convert to fraction form
    20,717.03/31,053.38 = 8,219.75/x
  3. Step 3: Cross multiply
    20,717.03x = 31,053.38 × 8,219.75
  4. Step 4: Simplify right side
    20,717.03x = 255,250,823.89
  5. Step 5: Solve for x
    x = 255,250,823.89/20,717.03
  6. Step 6: Final answer
    x = 12,320.82

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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.