Home / 20,711.23-31,079.63-9,025.36

Finding the Fourth Proportional to 20,711.23, 31,079.63 and 9,025.36

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Solution

The fourth proportional to 20,711.23, 31,079.63 and 9,025.36 is: 13,543.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.23 : 31,079.63 = 9,025.36 : x
  2. Step 2: Convert to fraction form
    20,711.23/31,079.63 = 9,025.36/x
  3. Step 3: Cross multiply
    20,711.23x = 31,079.63 × 9,025.36
  4. Step 4: Simplify right side
    20,711.23x = 280,504,794.28
  5. Step 5: Solve for x
    x = 280,504,794.28/20,711.23
  6. Step 6: Final answer
    x = 13,543.61

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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.