Home / 20,180.28-30,270.43-9,647.81

Finding the Fourth Proportional to 20,180.28, 30,270.43 and 9,647.81

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Solution

The fourth proportional to 20,180.28, 30,270.43 and 9,647.81 is: 14,471.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.28 : 30,270.43 = 9,647.81 : x
  2. Step 2: Convert to fraction form
    20,180.28/30,270.43 = 9,647.81/x
  3. Step 3: Cross multiply
    20,180.28x = 30,270.43 × 9,647.81
  4. Step 4: Simplify right side
    20,180.28x = 292,043,444.99
  5. Step 5: Solve for x
    x = 292,043,444.99/20,180.28
  6. Step 6: Final answer
    x = 14,471.73

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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.