Home / 20,874.32-31,316.28-6,834.80

Finding the Fourth Proportional to 20,874.32, 31,316.28 and 6,834.80

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Solution

The fourth proportional to 20,874.32, 31,316.28 and 6,834.80 is: 10,253.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.32 : 31,316.28 = 6,834.80 : x
  2. Step 2: Convert to fraction form
    20,874.32/31,316.28 = 6,834.80/x
  3. Step 3: Cross multiply
    20,874.32x = 31,316.28 × 6,834.80
  4. Step 4: Simplify right side
    20,874.32x = 214,040,510.54
  5. Step 5: Solve for x
    x = 214,040,510.54/20,874.32
  6. Step 6: Final answer
    x = 10,253.77

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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.