Home / 11,359.14-15,679.89-8,398.80

Finding the Fourth Proportional to 11,359.14, 15,679.89 and 8,398.80

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Solution

The fourth proportional to 11,359.14, 15,679.89 and 8,398.80 is: 11,593.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,359.14 : 15,679.89 = 8,398.80 : x
  2. Step 2: Convert to fraction form
    11,359.14/15,679.89 = 8,398.80/x
  3. Step 3: Cross multiply
    11,359.14x = 15,679.89 × 8,398.80
  4. Step 4: Simplify right side
    11,359.14x = 131,692,260.13
  5. Step 5: Solve for x
    x = 131,692,260.13/11,359.14
  6. Step 6: Final answer
    x = 11,593.51

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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.