Home / 20,874.40-31,316.46-6,834.38

Finding the Fourth Proportional to 20,874.40, 31,316.46 and 6,834.38

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Solution

The fourth proportional to 20,874.40, 31,316.46 and 6,834.38 is: 10,253.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.40 : 31,316.46 = 6,834.38 : x
  2. Step 2: Convert to fraction form
    20,874.40/31,316.46 = 6,834.38/x
  3. Step 3: Cross multiply
    20,874.40x = 31,316.46 × 6,834.38
  4. Step 4: Simplify right side
    20,874.40x = 214,028,587.89
  5. Step 5: Solve for x
    x = 214,028,587.89/20,874.40
  6. Step 6: Final answer
    x = 10,253.16

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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.