Home / 20,359.55-30,545.71-6,128.60

Finding the Fourth Proportional to 20,359.55, 30,545.71 and 6,128.60

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Solution

The fourth proportional to 20,359.55, 30,545.71 and 6,128.60 is: 9,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.55 : 30,545.71 = 6,128.60 : x
  2. Step 2: Convert to fraction form
    20,359.55/30,545.71 = 6,128.60/x
  3. Step 3: Cross multiply
    20,359.55x = 30,545.71 × 6,128.60
  4. Step 4: Simplify right side
    20,359.55x = 187,202,270.26
  5. Step 5: Solve for x
    x = 187,202,270.26/20,359.55
  6. Step 6: Final answer
    x = 9,194.81

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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.