Home / 20,446.89-28,216.53-11,494.29

Finding the Fourth Proportional to 20,446.89, 28,216.53 and 11,494.29

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Solution

The fourth proportional to 20,446.89, 28,216.53 and 11,494.29 is: 15,862.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.89 : 28,216.53 = 11,494.29 : x
  2. Step 2: Convert to fraction form
    20,446.89/28,216.53 = 11,494.29/x
  3. Step 3: Cross multiply
    20,446.89x = 28,216.53 × 11,494.29
  4. Step 4: Simplify right side
    20,446.89x = 324,328,978.61
  5. Step 5: Solve for x
    x = 324,328,978.61/20,446.89
  6. Step 6: Final answer
    x = 15,862.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.