Home / 21,540.36-32,304.30-8,389.80

Finding the Fourth Proportional to 21,540.36, 32,304.30 and 8,389.80

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Solution

The fourth proportional to 21,540.36, 32,304.30 and 8,389.80 is: 12,582.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.36 : 32,304.30 = 8,389.80 : x
  2. Step 2: Convert to fraction form
    21,540.36/32,304.30 = 8,389.80/x
  3. Step 3: Cross multiply
    21,540.36x = 32,304.30 × 8,389.80
  4. Step 4: Simplify right side
    21,540.36x = 271,026,616.14
  5. Step 5: Solve for x
    x = 271,026,616.14/21,540.36
  6. Step 6: Final answer
    x = 12,582.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.