Home / 31,921.32-47,878.32-12,199.44

Finding the Fourth Proportional to 31,921.32, 47,878.32 and 12,199.44

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Solution

The fourth proportional to 31,921.32, 47,878.32 and 12,199.44 is: 18,297.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,921.32 : 47,878.32 = 12,199.44 : x
  2. Step 2: Convert to fraction form
    31,921.32/47,878.32 = 12,199.44/x
  3. Step 3: Cross multiply
    31,921.32x = 47,878.32 × 12,199.44
  4. Step 4: Simplify right side
    31,921.32x = 584,088,692.14
  5. Step 5: Solve for x
    x = 584,088,692.14/31,921.32
  6. Step 6: Final answer
    x = 18,297.76

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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.