Home / 15,331.91-21,157.92-8,958.33

Finding the Fourth Proportional to 15,331.91, 21,157.92 and 8,958.33

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Solution

The fourth proportional to 15,331.91, 21,157.92 and 8,958.33 is: 12,362.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.91 : 21,157.92 = 8,958.33 : x
  2. Step 2: Convert to fraction form
    15,331.91/21,157.92 = 8,958.33/x
  3. Step 3: Cross multiply
    15,331.91x = 21,157.92 × 8,958.33
  4. Step 4: Simplify right side
    15,331.91x = 189,539,629.47
  5. Step 5: Solve for x
    x = 189,539,629.47/15,331.91
  6. Step 6: Final answer
    x = 12,362.43

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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.