Home / 21,242.62-31,861.86-6,451.66

Finding the Fourth Proportional to 21,242.62, 31,861.86 and 6,451.66

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Solution

The fourth proportional to 21,242.62, 31,861.86 and 6,451.66 is: 9,676.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.62 : 31,861.86 = 6,451.66 : x
  2. Step 2: Convert to fraction form
    21,242.62/31,861.86 = 6,451.66/x
  3. Step 3: Cross multiply
    21,242.62x = 31,861.86 × 6,451.66
  4. Step 4: Simplify right side
    21,242.62x = 205,561,887.69
  5. Step 5: Solve for x
    x = 205,561,887.69/21,242.62
  6. Step 6: Final answer
    x = 9,676.86

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1.5x scale

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.