Home / 11,478.88-17,216.05-3,156.75

Finding the Fourth Proportional to 11,478.88, 17,216.05 and 3,156.75

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Solution

The fourth proportional to 11,478.88, 17,216.05 and 3,156.75 is: 4,734.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.88 : 17,216.05 = 3,156.75 : x
  2. Step 2: Convert to fraction form
    11,478.88/17,216.05 = 3,156.75/x
  3. Step 3: Cross multiply
    11,478.88x = 17,216.05 × 3,156.75
  4. Step 4: Simplify right side
    11,478.88x = 54,346,765.84
  5. Step 5: Solve for x
    x = 54,346,765.84/11,478.88
  6. Step 6: Final answer
    x = 4,734.50

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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.