Home / 20,178.75-27,845.40-11,226.02

Finding the Fourth Proportional to 20,178.75, 27,845.40 and 11,226.02

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Solution

The fourth proportional to 20,178.75, 27,845.40 and 11,226.02 is: 15,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.75 : 27,845.40 = 11,226.02 : x
  2. Step 2: Convert to fraction form
    20,178.75/27,845.40 = 11,226.02/x
  3. Step 3: Cross multiply
    20,178.75x = 27,845.40 × 11,226.02
  4. Step 4: Simplify right side
    20,178.75x = 312,593,017.31
  5. Step 5: Solve for x
    x = 312,593,017.31/20,178.75
  6. Step 6: Final answer
    x = 15,491.20

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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.