Home / 40,939.32-61,408.98-13,239.48

Finding the Fourth Proportional to 40,939.32, 61,408.98 and 13,239.48

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Solution

The fourth proportional to 40,939.32, 61,408.98 and 13,239.48 is: 19,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,939.32 : 61,408.98 = 13,239.48 : x
  2. Step 2: Convert to fraction form
    40,939.32/61,408.98 = 13,239.48/x
  3. Step 3: Cross multiply
    40,939.32x = 61,408.98 × 13,239.48
  4. Step 4: Simplify right side
    40,939.32x = 813,022,962.53
  5. Step 5: Solve for x
    x = 813,022,962.53/40,939.32
  6. Step 6: Final answer
    x = 19,859.22

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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.