Home / 12,331.11-18,502.73-7,649.91

Finding the Fourth Proportional to 12,331.11, 18,502.73 and 7,649.91

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Solution

The fourth proportional to 12,331.11, 18,502.73 and 7,649.91 is: 11,478.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,331.11 : 18,502.73 = 7,649.91 : x
  2. Step 2: Convert to fraction form
    12,331.11/18,502.73 = 7,649.91/x
  3. Step 3: Cross multiply
    12,331.11x = 18,502.73 × 7,649.91
  4. Step 4: Simplify right side
    12,331.11x = 141,544,284.64
  5. Step 5: Solve for x
    x = 141,544,284.64/12,331.11
  6. Step 6: Final answer
    x = 11,478.64

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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.