Home / 20,545.40-30,785.70-17,240.60

Finding the Fourth Proportional to 20,545.40, 30,785.70 and 17,240.60

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Solution

The fourth proportional to 20,545.40, 30,785.70 and 17,240.60 is: 25,833.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.40 : 30,785.70 = 17,240.60 : x
  2. Step 2: Convert to fraction form
    20,545.40/30,785.70 = 17,240.60/x
  3. Step 3: Cross multiply
    20,545.40x = 30,785.70 × 17,240.60
  4. Step 4: Simplify right side
    20,545.40x = 530,763,939.42
  5. Step 5: Solve for x
    x = 530,763,939.42/20,545.40
  6. Step 6: Final answer
    x = 25,833.71

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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.