Home / 20,180.23-30,270.37-9,647.78

Finding the Fourth Proportional to 20,180.23, 30,270.37 and 9,647.78

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Solution

The fourth proportional to 20,180.23, 30,270.37 and 9,647.78 is: 14,471.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.23 : 30,270.37 = 9,647.78 : x
  2. Step 2: Convert to fraction form
    20,180.23/30,270.37 = 9,647.78/x
  3. Step 3: Cross multiply
    20,180.23x = 30,270.37 × 9,647.78
  4. Step 4: Simplify right side
    20,180.23x = 292,041,694.81
  5. Step 5: Solve for x
    x = 292,041,694.81/20,180.23
  6. Step 6: Final answer
    x = 14,471.68

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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.