Home / 31,461.06-47,169.72-13,921.32

Finding the Fourth Proportional to 31,461.06, 47,169.72 and 13,921.32

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Solution

The fourth proportional to 31,461.06, 47,169.72 and 13,921.32 is: 20,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,461.06 : 47,169.72 = 13,921.32 : x
  2. Step 2: Convert to fraction form
    31,461.06/47,169.72 = 13,921.32/x
  3. Step 3: Cross multiply
    31,461.06x = 47,169.72 × 13,921.32
  4. Step 4: Simplify right side
    31,461.06x = 656,664,766.43
  5. Step 5: Solve for x
    x = 656,664,766.43/31,461.06
  6. Step 6: Final answer
    x = 20,872.30

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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.