Home / 15,481.28-21,369.66-9,193.64

Finding the Fourth Proportional to 15,481.28, 21,369.66 and 9,193.64

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Solution

The fourth proportional to 15,481.28, 21,369.66 and 9,193.64 is: 12,690.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.28 : 21,369.66 = 9,193.64 : x
  2. Step 2: Convert to fraction form
    15,481.28/21,369.66 = 9,193.64/x
  3. Step 3: Cross multiply
    15,481.28x = 21,369.66 × 9,193.64
  4. Step 4: Simplify right side
    15,481.28x = 196,464,960.96
  5. Step 5: Solve for x
    x = 196,464,960.96/15,481.28
  6. Step 6: Final answer
    x = 12,690.49

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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.