Home / 20,747.68-31,117.68-6,892.96

Finding the Fourth Proportional to 20,747.68, 31,117.68 and 6,892.96

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Solution

The fourth proportional to 20,747.68, 31,117.68 and 6,892.96 is: 10,338.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.68 : 31,117.68 = 6,892.96 : x
  2. Step 2: Convert to fraction form
    20,747.68/31,117.68 = 6,892.96/x
  3. Step 3: Cross multiply
    20,747.68x = 31,117.68 × 6,892.96
  4. Step 4: Simplify right side
    20,747.68x = 214,492,923.53
  5. Step 5: Solve for x
    x = 214,492,923.53/20,747.68
  6. Step 6: Final answer
    x = 10,338.16

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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.