Home / 21,968.50-32,956.89-8,821.90

Finding the Fourth Proportional to 21,968.50, 32,956.89 and 8,821.90

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Solution

The fourth proportional to 21,968.50, 32,956.89 and 8,821.90 is: 13,234.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.50 : 32,956.89 = 8,821.90 : x
  2. Step 2: Convert to fraction form
    21,968.50/32,956.89 = 8,821.90/x
  3. Step 3: Cross multiply
    21,968.50x = 32,956.89 × 8,821.90
  4. Step 4: Simplify right side
    21,968.50x = 290,742,387.89
  5. Step 5: Solve for x
    x = 290,742,387.89/21,968.50
  6. Step 6: Final answer
    x = 13,234.51

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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.