Home / 15,453.94-21,326.56-8,380.42

Finding the Fourth Proportional to 15,453.94, 21,326.56 and 8,380.42

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Solution

The fourth proportional to 15,453.94, 21,326.56 and 8,380.42 is: 11,565.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.94 : 21,326.56 = 8,380.42 : x
  2. Step 2: Convert to fraction form
    15,453.94/21,326.56 = 8,380.42/x
  3. Step 3: Cross multiply
    15,453.94x = 21,326.56 × 8,380.42
  4. Step 4: Simplify right side
    15,453.94x = 178,725,529.96
  5. Step 5: Solve for x
    x = 178,725,529.96/15,453.94
  6. Step 6: Final answer
    x = 11,565.05

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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.