Home / 20,912.02-28,850.37-11,954.71

Finding the Fourth Proportional to 20,912.02, 28,850.37 and 11,954.71

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Solution

The fourth proportional to 20,912.02, 28,850.37 and 11,954.71 is: 16,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912.02 : 28,850.37 = 11,954.71 : x
  2. Step 2: Convert to fraction form
    20,912.02/28,850.37 = 11,954.71/x
  3. Step 3: Cross multiply
    20,912.02x = 28,850.37 × 11,954.71
  4. Step 4: Simplify right side
    20,912.02x = 344,897,806.74
  5. Step 5: Solve for x
    x = 344,897,806.74/20,912.02
  6. Step 6: Final answer
    x = 16,492.80

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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.