Home / 28,331.20-42,399.60-25,998.40

Finding the Fourth Proportional to 28,331.20, 42,399.60 and 25,998.40

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Solution

The fourth proportional to 28,331.20, 42,399.60 and 25,998.40 is: 38,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.20 : 42,399.60 = 25,998.40 : x
  2. Step 2: Convert to fraction form
    28,331.20/42,399.60 = 25,998.40/x
  3. Step 3: Cross multiply
    28,331.20x = 42,399.60 × 25,998.40
  4. Step 4: Simplify right side
    28,331.20x = 1,102,321,760.64
  5. Step 5: Solve for x
    x = 1,102,321,760.64/28,331.20
  6. Step 6: Final answer
    x = 38,908.40

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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.