Home / 21,250.80-31,877.55-6,469.88

Finding the Fourth Proportional to 21,250.80, 31,877.55 and 6,469.88

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Solution

The fourth proportional to 21,250.80, 31,877.55 and 6,469.88 is: 9,705.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.80 : 31,877.55 = 6,469.88 : x
  2. Step 2: Convert to fraction form
    21,250.80/31,877.55 = 6,469.88/x
  3. Step 3: Cross multiply
    21,250.80x = 31,877.55 × 6,469.88
  4. Step 4: Simplify right side
    21,250.80x = 206,243,763.81
  5. Step 5: Solve for x
    x = 206,243,763.81/21,250.80
  6. Step 6: Final answer
    x = 9,705.22

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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.