Home / 28,331.38-39,105.54-18,899.92

Finding the Fourth Proportional to 28,331.38, 39,105.54 and 18,899.92

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Solution

The fourth proportional to 28,331.38, 39,105.54 and 18,899.92 is: 26,087.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.38 : 39,105.54 = 18,899.92 : x
  2. Step 2: Convert to fraction form
    28,331.38/39,105.54 = 18,899.92/x
  3. Step 3: Cross multiply
    28,331.38x = 39,105.54 × 18,899.92
  4. Step 4: Simplify right side
    28,331.38x = 739,091,577.56
  5. Step 5: Solve for x
    x = 739,091,577.56/28,331.38
  6. Step 6: Final answer
    x = 26,087.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.