Home / 15,468.25-21,351.72-9,180.64

Finding the Fourth Proportional to 15,468.25, 21,351.72 and 9,180.64

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Solution

The fourth proportional to 15,468.25, 21,351.72 and 9,180.64 is: 12,672.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,468.25 : 21,351.72 = 9,180.64 : x
  2. Step 2: Convert to fraction form
    15,468.25/21,351.72 = 9,180.64/x
  3. Step 3: Cross multiply
    15,468.25x = 21,351.72 × 9,180.64
  4. Step 4: Simplify right side
    15,468.25x = 196,022,454.70
  5. Step 5: Solve for x
    x = 196,022,454.70/15,468.25
  6. Step 6: Final answer
    x = 12,672.57

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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.