Home / 15,534.25-21,418.72-12,691.15

Finding the Fourth Proportional to 15,534.25, 21,418.72 and 12,691.15

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Solution

The fourth proportional to 15,534.25, 21,418.72 and 12,691.15 is: 17,498.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.25 : 21,418.72 = 12,691.15 : x
  2. Step 2: Convert to fraction form
    15,534.25/21,418.72 = 12,691.15/x
  3. Step 3: Cross multiply
    15,534.25x = 21,418.72 × 12,691.15
  4. Step 4: Simplify right side
    15,534.25x = 271,828,188.33
  5. Step 5: Solve for x
    x = 271,828,188.33/15,534.25
  6. Step 6: Final answer
    x = 17,498.64

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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.