Home / 31,827.92-47,728.87-13,817.30

Finding the Fourth Proportional to 31,827.92, 47,728.87 and 13,817.30

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Solution

The fourth proportional to 31,827.92, 47,728.87 and 13,817.30 is: 20,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,827.92 : 47,728.87 = 13,817.30 : x
  2. Step 2: Convert to fraction form
    31,827.92/47,728.87 = 13,817.30/x
  3. Step 3: Cross multiply
    31,827.92x = 47,728.87 × 13,817.30
  4. Step 4: Simplify right side
    31,827.92x = 659,483,842.26
  5. Step 5: Solve for x
    x = 659,483,842.26/31,827.92
  6. Step 6: Final answer
    x = 20,720.30

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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.