Home / 20,711.07-31,066.70-8,863.11

Finding the Fourth Proportional to 20,711.07, 31,066.70 and 8,863.11

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Solution

The fourth proportional to 20,711.07, 31,066.70 and 8,863.11 is: 13,294.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.07 : 31,066.70 = 8,863.11 : x
  2. Step 2: Convert to fraction form
    20,711.07/31,066.70 = 8,863.11/x
  3. Step 3: Cross multiply
    20,711.07x = 31,066.70 × 8,863.11
  4. Step 4: Simplify right side
    20,711.07x = 275,347,579.44
  5. Step 5: Solve for x
    x = 275,347,579.44/20,711.07
  6. Step 6: Final answer
    x = 13,294.71

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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.