Home / 20,236.40-27,921.48-12,278.44

Finding the Fourth Proportional to 20,236.40, 27,921.48 and 12,278.44

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Solution

The fourth proportional to 20,236.40, 27,921.48 and 12,278.44 is: 16,941.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,236.40 : 27,921.48 = 12,278.44 : x
  2. Step 2: Convert to fraction form
    20,236.40/27,921.48 = 12,278.44/x
  3. Step 3: Cross multiply
    20,236.40x = 27,921.48 × 12,278.44
  4. Step 4: Simplify right side
    20,236.40x = 342,832,216.89
  5. Step 5: Solve for x
    x = 342,832,216.89/20,236.40
  6. Step 6: Final answer
    x = 16,941.36

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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.