Home / 28,408.70-42,625.20-17,886.80

Finding the Fourth Proportional to 28,408.70, 42,625.20 and 17,886.80

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Solution

The fourth proportional to 28,408.70, 42,625.20 and 17,886.80 is: 26,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.70 : 42,625.20 = 17,886.80 : x
  2. Step 2: Convert to fraction form
    28,408.70/42,625.20 = 17,886.80/x
  3. Step 3: Cross multiply
    28,408.70x = 42,625.20 × 17,886.80
  4. Step 4: Simplify right side
    28,408.70x = 762,428,427.36
  5. Step 5: Solve for x
    x = 762,428,427.36/28,408.70
  6. Step 6: Final answer
    x = 26,837.85

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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.