Home / 20,930.94-28,885.02-11,371.02

Finding the Fourth Proportional to 20,930.94, 28,885.02 and 11,371.02

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Solution

The fourth proportional to 20,930.94, 28,885.02 and 11,371.02 is: 15,692.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.94 : 28,885.02 = 11,371.02 : x
  2. Step 2: Convert to fraction form
    20,930.94/28,885.02 = 11,371.02/x
  3. Step 3: Cross multiply
    20,930.94x = 28,885.02 × 11,371.02
  4. Step 4: Simplify right side
    20,930.94x = 328,452,140.12
  5. Step 5: Solve for x
    x = 328,452,140.12/20,930.94
  6. Step 6: Final answer
    x = 15,692.18

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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.