Home / 20,711.10-31,049.18-9,015.50

Finding the Fourth Proportional to 20,711.10, 31,049.18 and 9,015.50

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Solution

The fourth proportional to 20,711.10, 31,049.18 and 9,015.50 is: 13,515.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.10 : 31,049.18 = 9,015.50 : x
  2. Step 2: Convert to fraction form
    20,711.10/31,049.18 = 9,015.50/x
  3. Step 3: Cross multiply
    20,711.10x = 31,049.18 × 9,015.50
  4. Step 4: Simplify right side
    20,711.10x = 279,923,882.29
  5. Step 5: Solve for x
    x = 279,923,882.29/20,711.10
  6. Step 6: Final answer
    x = 13,515.65

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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.