Home / 21,099.29-31,651.09-7,962.71

Finding the Fourth Proportional to 21,099.29, 31,651.09 and 7,962.71

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Solution

The fourth proportional to 21,099.29, 31,651.09 and 7,962.71 is: 11,944.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.29 : 31,651.09 = 7,962.71 : x
  2. Step 2: Convert to fraction form
    21,099.29/31,651.09 = 7,962.71/x
  3. Step 3: Cross multiply
    21,099.29x = 31,651.09 × 7,962.71
  4. Step 4: Simplify right side
    21,099.29x = 252,028,272.69
  5. Step 5: Solve for x
    x = 252,028,272.69/21,099.29
  6. Step 6: Final answer
    x = 11,944.87

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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.