Home / 31,549.44-47,319.68-18,408

Finding the Fourth Proportional to 31,549.44, 47,319.68 and 18,408

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Solution

The fourth proportional to 31,549.44, 47,319.68 and 18,408 is: 27,609.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,549.44 : 47,319.68 = 18,408 : x
  2. Step 2: Convert to fraction form
    31,549.44/47,319.68 = 18,408/x
  3. Step 3: Cross multiply
    31,549.44x = 47,319.68 × 18,408
  4. Step 4: Simplify right side
    31,549.44x = 871,060,669.44
  5. Step 5: Solve for x
    x = 871,060,669.44/31,549.44
  6. Step 6: Final answer
    x = 27,609.39

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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.