Home / 21,539.09-29,719.58-12,584.87

Finding the Fourth Proportional to 21,539.09, 29,719.58 and 12,584.87

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Solution

The fourth proportional to 21,539.09, 29,719.58 and 12,584.87 is: 17,364.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.09 : 29,719.58 = 12,584.87 : x
  2. Step 2: Convert to fraction form
    21,539.09/29,719.58 = 12,584.87/x
  3. Step 3: Cross multiply
    21,539.09x = 29,719.58 × 12,584.87
  4. Step 4: Simplify right side
    21,539.09x = 374,016,839.23
  5. Step 5: Solve for x
    x = 374,016,839.23/21,539.09
  6. Step 6: Final answer
    x = 17,364.56

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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.