Home / 15,178.20-20,942.46-8,887.56

Finding the Fourth Proportional to 15,178.20, 20,942.46 and 8,887.56

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Solution

The fourth proportional to 15,178.20, 20,942.46 and 8,887.56 is: 12,262.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,178.20 : 20,942.46 = 8,887.56 : x
  2. Step 2: Convert to fraction form
    15,178.20/20,942.46 = 8,887.56/x
  3. Step 3: Cross multiply
    15,178.20x = 20,942.46 × 8,887.56
  4. Step 4: Simplify right side
    15,178.20x = 186,127,369.80
  5. Step 5: Solve for x
    x = 186,127,369.80/15,178.20
  6. Step 6: Final answer
    x = 12,262.81

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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.