Home / 21,540.14-29,720.99-12,585.91

Finding the Fourth Proportional to 21,540.14, 29,720.99 and 12,585.91

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Solution

The fourth proportional to 21,540.14, 29,720.99 and 12,585.91 is: 17,365.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.14 : 29,720.99 = 12,585.91 : x
  2. Step 2: Convert to fraction form
    21,540.14/29,720.99 = 12,585.91/x
  3. Step 3: Cross multiply
    21,540.14x = 29,720.99 × 12,585.91
  4. Step 4: Simplify right side
    21,540.14x = 374,065,568.02
  5. Step 5: Solve for x
    x = 374,065,568.02/21,540.14
  6. Step 6: Final answer
    x = 17,365.98

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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.