Home / 10,178.20-15,249.36-8,914.70

Finding the Fourth Proportional to 10,178.20, 15,249.36 and 8,914.70

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Solution

The fourth proportional to 10,178.20, 15,249.36 and 8,914.70 is: 13,356.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,178.20 : 15,249.36 = 8,914.70 : x
  2. Step 2: Convert to fraction form
    10,178.20/15,249.36 = 8,914.70/x
  3. Step 3: Cross multiply
    10,178.20x = 15,249.36 × 8,914.70
  4. Step 4: Simplify right side
    10,178.20x = 135,943,469.59
  5. Step 5: Solve for x
    x = 135,943,469.59/10,178.20
  6. Step 6: Final answer
    x = 13,356.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.