Home / 21,246.99-31,889.97-21,167.61

Finding the Fourth Proportional to 21,246.99, 31,889.97 and 21,167.61

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Solution

The fourth proportional to 21,246.99, 31,889.97 and 21,167.61 is: 31,770.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.99 : 31,889.97 = 21,167.61 : x
  2. Step 2: Convert to fraction form
    21,246.99/31,889.97 = 21,167.61/x
  3. Step 3: Cross multiply
    21,246.99x = 31,889.97 × 21,167.61
  4. Step 4: Simplify right side
    21,246.99x = 675,034,447.87
  5. Step 5: Solve for x
    x = 675,034,447.87/21,246.99
  6. Step 6: Final answer
    x = 31,770.83

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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.