Home / 15,473.44-21,353.23-8,399.72

Finding the Fourth Proportional to 15,473.44, 21,353.23 and 8,399.72

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Solution

The fourth proportional to 15,473.44, 21,353.23 and 8,399.72 is: 11,591.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,473.44 : 21,353.23 = 8,399.72 : x
  2. Step 2: Convert to fraction form
    15,473.44/21,353.23 = 8,399.72/x
  3. Step 3: Cross multiply
    15,473.44x = 21,353.23 × 8,399.72
  4. Step 4: Simplify right side
    15,473.44x = 179,361,153.10
  5. Step 5: Solve for x
    x = 179,361,153.10/15,473.44
  6. Step 6: Final answer
    x = 11,591.55

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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.