Home / 20,331.38-30,471.55-10,971.02

Finding the Fourth Proportional to 20,331.38, 30,471.55 and 10,971.02

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Solution

The fourth proportional to 20,331.38, 30,471.55 and 10,971.02 is: 16,442.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.38 : 30,471.55 = 10,971.02 : x
  2. Step 2: Convert to fraction form
    20,331.38/30,471.55 = 10,971.02/x
  3. Step 3: Cross multiply
    20,331.38x = 30,471.55 × 10,971.02
  4. Step 4: Simplify right side
    20,331.38x = 334,303,984.48
  5. Step 5: Solve for x
    x = 334,303,984.48/20,331.38
  6. Step 6: Final answer
    x = 16,442.76

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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.