Home / 20,255.18-30,385.81-7,105.23

Finding the Fourth Proportional to 20,255.18, 30,385.81 and 7,105.23

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Solution

The fourth proportional to 20,255.18, 30,385.81 and 7,105.23 is: 10,658.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.18 : 30,385.81 = 7,105.23 : x
  2. Step 2: Convert to fraction form
    20,255.18/30,385.81 = 7,105.23/x
  3. Step 3: Cross multiply
    20,255.18x = 30,385.81 × 7,105.23
  4. Step 4: Simplify right side
    20,255.18x = 215,898,264.97
  5. Step 5: Solve for x
    x = 215,898,264.97/20,255.18
  6. Step 6: Final answer
    x = 10,658.92

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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.