Home / 21,540.52-29,720.29-12,582.93

Finding the Fourth Proportional to 21,540.52, 29,720.29 and 12,582.93

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Solution

The fourth proportional to 21,540.52, 29,720.29 and 12,582.93 is: 17,361.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.52 : 29,720.29 = 12,582.93 : x
  2. Step 2: Convert to fraction form
    21,540.52/29,720.29 = 12,582.93/x
  3. Step 3: Cross multiply
    21,540.52x = 29,720.29 × 12,582.93
  4. Step 4: Simplify right side
    21,540.52x = 373,968,265.74
  5. Step 5: Solve for x
    x = 373,968,265.74/21,540.52
  6. Step 6: Final answer
    x = 17,361.16

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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.