Home / 38,408.87-57,615.12-18,663.90

Finding the Fourth Proportional to 38,408.87, 57,615.12 and 18,663.90

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Solution

The fourth proportional to 38,408.87, 57,615.12 and 18,663.90 is: 27,996.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,408.87 : 57,615.12 = 18,663.90 : x
  2. Step 2: Convert to fraction form
    38,408.87/57,615.12 = 18,663.90/x
  3. Step 3: Cross multiply
    38,408.87x = 57,615.12 × 18,663.90
  4. Step 4: Simplify right side
    38,408.87x = 1,075,322,838.17
  5. Step 5: Solve for x
    x = 1,075,322,838.17/38,408.87
  6. Step 6: Final answer
    x = 27,996.74

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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.