Home / 15,399.72-21,251.60-8,326.13

Finding the Fourth Proportional to 15,399.72, 21,251.60 and 8,326.13

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Solution

The fourth proportional to 15,399.72, 21,251.60 and 8,326.13 is: 11,490.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,399.72 : 21,251.60 = 8,326.13 : x
  2. Step 2: Convert to fraction form
    15,399.72/21,251.60 = 8,326.13/x
  3. Step 3: Cross multiply
    15,399.72x = 21,251.60 × 8,326.13
  4. Step 4: Simplify right side
    15,399.72x = 176,943,467.64
  5. Step 5: Solve for x
    x = 176,943,467.64/15,399.72
  6. Step 6: Final answer
    x = 11,490.04

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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.