Home / 20,750.98-28,638.78-11,799.82

Finding the Fourth Proportional to 20,750.98, 28,638.78 and 11,799.82

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Solution

The fourth proportional to 20,750.98, 28,638.78 and 11,799.82 is: 16,285.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.98 : 28,638.78 = 11,799.82 : x
  2. Step 2: Convert to fraction form
    20,750.98/28,638.78 = 11,799.82/x
  3. Step 3: Cross multiply
    20,750.98x = 28,638.78 × 11,799.82
  4. Step 4: Simplify right side
    20,750.98x = 337,932,449.02
  5. Step 5: Solve for x
    x = 337,932,449.02/20,750.98
  6. Step 6: Final answer
    x = 16,285.13

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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.