Home / 28,026.38-38,675-17,415.78

Finding the Fourth Proportional to 28,026.38, 38,675 and 17,415.78

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Solution

The fourth proportional to 28,026.38, 38,675 and 17,415.78 is: 24,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,026.38 : 38,675 = 17,415.78 : x
  2. Step 2: Convert to fraction form
    28,026.38/38,675 = 17,415.78/x
  3. Step 3: Cross multiply
    28,026.38x = 38,675 × 17,415.78
  4. Step 4: Simplify right side
    28,026.38x = 673,555,291.50
  5. Step 5: Solve for x
    x = 673,555,291.50/28,026.38
  6. Step 6: Final answer
    x = 24,032.90

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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.