Home / 21,929.60-32,872.80-10,827.20

Finding the Fourth Proportional to 21,929.60, 32,872.80 and 10,827.20

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Solution

The fourth proportional to 21,929.60, 32,872.80 and 10,827.20 is: 16,230.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.60 : 32,872.80 = 10,827.20 : x
  2. Step 2: Convert to fraction form
    21,929.60/32,872.80 = 10,827.20/x
  3. Step 3: Cross multiply
    21,929.60x = 32,872.80 × 10,827.20
  4. Step 4: Simplify right side
    21,929.60x = 355,920,380.16
  5. Step 5: Solve for x
    x = 355,920,380.16/21,929.60
  6. Step 6: Final answer
    x = 16,230.14

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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.