Home / 21,540.62-32,304.65-8,389.86

Finding the Fourth Proportional to 21,540.62, 32,304.65 and 8,389.86

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Solution

The fourth proportional to 21,540.62, 32,304.65 and 8,389.86 is: 12,582.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.62 : 32,304.65 = 8,389.86 : x
  2. Step 2: Convert to fraction form
    21,540.62/32,304.65 = 8,389.86/x
  3. Step 3: Cross multiply
    21,540.62x = 32,304.65 × 8,389.86
  4. Step 4: Simplify right side
    21,540.62x = 271,031,448.90
  5. Step 5: Solve for x
    x = 271,031,448.90/21,540.62
  6. Step 6: Final answer
    x = 12,582.34

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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.