Home / 15,613.84-21,539.88-8,986

Finding the Fourth Proportional to 15,613.84, 21,539.88 and 8,986

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Solution

The fourth proportional to 15,613.84, 21,539.88 and 8,986 is: 12,396.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.84 : 21,539.88 = 8,986 : x
  2. Step 2: Convert to fraction form
    15,613.84/21,539.88 = 8,986/x
  3. Step 3: Cross multiply
    15,613.84x = 21,539.88 × 8,986
  4. Step 4: Simplify right side
    15,613.84x = 193,557,361.68
  5. Step 5: Solve for x
    x = 193,557,361.68/15,613.84
  6. Step 6: Final answer
    x = 12,396.53

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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.