Home / 11,621.64-17,427-4,220.88

Finding the Fourth Proportional to 11,621.64, 17,427 and 4,220.88

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Solution

The fourth proportional to 11,621.64, 17,427 and 4,220.88 is: 6,329.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.64 : 17,427 = 4,220.88 : x
  2. Step 2: Convert to fraction form
    11,621.64/17,427 = 4,220.88/x
  3. Step 3: Cross multiply
    11,621.64x = 17,427 × 4,220.88
  4. Step 4: Simplify right side
    11,621.64x = 73,557,275.76
  5. Step 5: Solve for x
    x = 73,557,275.76/11,621.64
  6. Step 6: Final answer
    x = 6,329.34

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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.