Home / 20,481.77-28,264.85-11,985.52

Finding the Fourth Proportional to 20,481.77, 28,264.85 and 11,985.52

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Solution

The fourth proportional to 20,481.77, 28,264.85 and 11,985.52 is: 16,540.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.77 : 28,264.85 = 11,985.52 : x
  2. Step 2: Convert to fraction form
    20,481.77/28,264.85 = 11,985.52/x
  3. Step 3: Cross multiply
    20,481.77x = 28,264.85 × 11,985.52
  4. Step 4: Simplify right side
    20,481.77x = 338,768,865.04
  5. Step 5: Solve for x
    x = 338,768,865.04/20,481.77
  6. Step 6: Final answer
    x = 16,540.02

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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.