Home / 15,544.89-21,454.71-9,171.09

Finding the Fourth Proportional to 15,544.89, 21,454.71 and 9,171.09

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Solution

The fourth proportional to 15,544.89, 21,454.71 and 9,171.09 is: 12,657.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,544.89 : 21,454.71 = 9,171.09 : x
  2. Step 2: Convert to fraction form
    15,544.89/21,454.71 = 9,171.09/x
  3. Step 3: Cross multiply
    15,544.89x = 21,454.71 × 9,171.09
  4. Step 4: Simplify right side
    15,544.89x = 196,763,076.33
  5. Step 5: Solve for x
    x = 196,763,076.33/15,544.89
  6. Step 6: Final answer
    x = 12,657.73

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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.