Home / 15,531.89-21,434.91-11,696.66

Finding the Fourth Proportional to 15,531.89, 21,434.91 and 11,696.66

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Solution

The fourth proportional to 15,531.89, 21,434.91 and 11,696.66 is: 16,142.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.89 : 21,434.91 = 11,696.66 : x
  2. Step 2: Convert to fraction form
    15,531.89/21,434.91 = 11,696.66/x
  3. Step 3: Cross multiply
    15,531.89x = 21,434.91 × 11,696.66
  4. Step 4: Simplify right side
    15,531.89x = 250,716,742.33
  5. Step 5: Solve for x
    x = 250,716,742.33/15,531.89
  6. Step 6: Final answer
    x = 16,142.07

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.