Home / 12,261.36-18,382.29-5,331

Finding the Fourth Proportional to 12,261.36, 18,382.29 and 5,331

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Solution

The fourth proportional to 12,261.36, 18,382.29 and 5,331 is: 7,992.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.36 : 18,382.29 = 5,331 : x
  2. Step 2: Convert to fraction form
    12,261.36/18,382.29 = 5,331/x
  3. Step 3: Cross multiply
    12,261.36x = 18,382.29 × 5,331
  4. Step 4: Simplify right side
    12,261.36x = 97,995,987.99
  5. Step 5: Solve for x
    x = 97,995,987.99/12,261.36
  6. Step 6: Final answer
    x = 7,992.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.