Home / 15,546.78-21,467.97-13,330.62

Finding the Fourth Proportional to 15,546.78, 21,467.97 and 13,330.62

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Solution

The fourth proportional to 15,546.78, 21,467.97 and 13,330.62 is: 18,407.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,546.78 : 21,467.97 = 13,330.62 : x
  2. Step 2: Convert to fraction form
    15,546.78/21,467.97 = 13,330.62/x
  3. Step 3: Cross multiply
    15,546.78x = 21,467.97 × 13,330.62
  4. Step 4: Simplify right side
    15,546.78x = 286,181,350.24
  5. Step 5: Solve for x
    x = 286,181,350.24/15,546.78
  6. Step 6: Final answer
    x = 18,407.76

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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.