Home / 21,242.24-31,861.30-6,451.28

Finding the Fourth Proportional to 21,242.24, 31,861.30 and 6,451.28

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Solution

The fourth proportional to 21,242.24, 31,861.30 and 6,451.28 is: 9,676.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.24 : 31,861.30 = 6,451.28 : x
  2. Step 2: Convert to fraction form
    21,242.24/31,861.30 = 6,451.28/x
  3. Step 3: Cross multiply
    21,242.24x = 31,861.30 × 6,451.28
  4. Step 4: Simplify right side
    21,242.24x = 205,546,167.46
  5. Step 5: Solve for x
    x = 205,546,167.46/21,242.24
  6. Step 6: Final answer
    x = 9,676.29

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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.