Home / 15,456.96-21,331.52-8,743.20

Finding the Fourth Proportional to 15,456.96, 21,331.52 and 8,743.20

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Solution

The fourth proportional to 15,456.96, 21,331.52 and 8,743.20 is: 12,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.96 : 21,331.52 = 8,743.20 : x
  2. Step 2: Convert to fraction form
    15,456.96/21,331.52 = 8,743.20/x
  3. Step 3: Cross multiply
    15,456.96x = 21,331.52 × 8,743.20
  4. Step 4: Simplify right side
    15,456.96x = 186,505,745.66
  5. Step 5: Solve for x
    x = 186,505,745.66/15,456.96
  6. Step 6: Final answer
    x = 12,066.13

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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.