Home / 15,960.12-21,932.45-15,228.36

Finding the Fourth Proportional to 15,960.12, 21,932.45 and 15,228.36

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Solution

The fourth proportional to 15,960.12, 21,932.45 and 15,228.36 is: 20,926.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,960.12 : 21,932.45 = 15,228.36 : x
  2. Step 2: Convert to fraction form
    15,960.12/21,932.45 = 15,228.36/x
  3. Step 3: Cross multiply
    15,960.12x = 21,932.45 × 15,228.36
  4. Step 4: Simplify right side
    15,960.12x = 333,995,168.14
  5. Step 5: Solve for x
    x = 333,995,168.14/15,960.12
  6. Step 6: Final answer
    x = 20,926.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.