Home / 20,829.29-31,247.18-6,786.05

Finding the Fourth Proportional to 20,829.29, 31,247.18 and 6,786.05

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Solution

The fourth proportional to 20,829.29, 31,247.18 and 6,786.05 is: 10,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.29 : 31,247.18 = 6,786.05 : x
  2. Step 2: Convert to fraction form
    20,829.29/31,247.18 = 6,786.05/x
  3. Step 3: Cross multiply
    20,829.29x = 31,247.18 × 6,786.05
  4. Step 4: Simplify right side
    20,829.29x = 212,045,008.20
  5. Step 5: Solve for x
    x = 212,045,008.20/20,829.29
  6. Step 6: Final answer
    x = 10,180.13

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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.