Home / 20,043.72-27,652.87-15,445.85

Finding the Fourth Proportional to 20,043.72, 27,652.87 and 15,445.85

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Solution

The fourth proportional to 20,043.72, 27,652.87 and 15,445.85 is: 21,309.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,043.72 : 27,652.87 = 15,445.85 : x
  2. Step 2: Convert to fraction form
    20,043.72/27,652.87 = 15,445.85/x
  3. Step 3: Cross multiply
    20,043.72x = 27,652.87 × 15,445.85
  4. Step 4: Simplify right side
    20,043.72x = 427,121,974.34
  5. Step 5: Solve for x
    x = 427,121,974.34/20,043.72
  6. Step 6: Final answer
    x = 21,309.52

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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.