Home / 26,331.20-39,381.60-20,110.40

Finding the Fourth Proportional to 26,331.20, 39,381.60 and 20,110.40

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Solution

The fourth proportional to 26,331.20, 39,381.60 and 20,110.40 is: 30,077.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,331.20 : 39,381.60 = 20,110.40 : x
  2. Step 2: Convert to fraction form
    26,331.20/39,381.60 = 20,110.40/x
  3. Step 3: Cross multiply
    26,331.20x = 39,381.60 × 20,110.40
  4. Step 4: Simplify right side
    26,331.20x = 791,979,728.64
  5. Step 5: Solve for x
    x = 791,979,728.64/26,331.20
  6. Step 6: Final answer
    x = 30,077.62

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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.