Home / 20,278.35-27,983.83-11,325.98

Finding the Fourth Proportional to 20,278.35, 27,983.83 and 11,325.98

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Solution

The fourth proportional to 20,278.35, 27,983.83 and 11,325.98 is: 15,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.35 : 27,983.83 = 11,325.98 : x
  2. Step 2: Convert to fraction form
    20,278.35/27,983.83 = 11,325.98/x
  3. Step 3: Cross multiply
    20,278.35x = 27,983.83 × 11,325.98
  4. Step 4: Simplify right side
    20,278.35x = 316,944,298.90
  5. Step 5: Solve for x
    x = 316,944,298.90/20,278.35
  6. Step 6: Final answer
    x = 15,629.69

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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.