Home / 13,331.10-20,003.55-5,439.40

Finding the Fourth Proportional to 13,331.10, 20,003.55 and 5,439.40

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Solution

The fourth proportional to 13,331.10, 20,003.55 and 5,439.40 is: 8,161.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.10 : 20,003.55 = 5,439.40 : x
  2. Step 2: Convert to fraction form
    13,331.10/20,003.55 = 5,439.40/x
  3. Step 3: Cross multiply
    13,331.10x = 20,003.55 × 5,439.40
  4. Step 4: Simplify right side
    13,331.10x = 108,807,309.87
  5. Step 5: Solve for x
    x = 108,807,309.87/13,331.10
  6. Step 6: Final answer
    x = 8,161.92

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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.