Home / 15,342.52-21,120.44-11,356.12

Finding the Fourth Proportional to 15,342.52, 21,120.44 and 11,356.12

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Solution

The fourth proportional to 15,342.52, 21,120.44 and 11,356.12 is: 15,632.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.52 : 21,120.44 = 11,356.12 : x
  2. Step 2: Convert to fraction form
    15,342.52/21,120.44 = 11,356.12/x
  3. Step 3: Cross multiply
    15,342.52x = 21,120.44 × 11,356.12
  4. Step 4: Simplify right side
    15,342.52x = 239,846,251.09
  5. Step 5: Solve for x
    x = 239,846,251.09/15,342.52
  6. Step 6: Final answer
    x = 15,632.78

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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.