Home / 10,955.20-16,432.68-2,747.20

Finding the Fourth Proportional to 10,955.20, 16,432.68 and 2,747.20

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Solution

The fourth proportional to 10,955.20, 16,432.68 and 2,747.20 is: 4,120.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.20 : 16,432.68 = 2,747.20 : x
  2. Step 2: Convert to fraction form
    10,955.20/16,432.68 = 2,747.20/x
  3. Step 3: Cross multiply
    10,955.20x = 16,432.68 × 2,747.20
  4. Step 4: Simplify right side
    10,955.20x = 45,143,858.50
  5. Step 5: Solve for x
    x = 45,143,858.50/10,955.20
  6. Step 6: Final answer
    x = 4,120.77

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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.