Home / 15,022.88-20,728.41-11,437.11

Finding the Fourth Proportional to 15,022.88, 20,728.41 and 11,437.11

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Solution

The fourth proportional to 15,022.88, 20,728.41 and 11,437.11 is: 15,780.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.88 : 20,728.41 = 11,437.11 : x
  2. Step 2: Convert to fraction form
    15,022.88/20,728.41 = 11,437.11/x
  3. Step 3: Cross multiply
    15,022.88x = 20,728.41 × 11,437.11
  4. Step 4: Simplify right side
    15,022.88x = 237,073,105.30
  5. Step 5: Solve for x
    x = 237,073,105.30/15,022.88
  6. Step 6: Final answer
    x = 15,780.81

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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.