Home / 21,967.20-32,931.36-8,100

Finding the Fourth Proportional to 21,967.20, 32,931.36 and 8,100

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Solution

The fourth proportional to 21,967.20, 32,931.36 and 8,100 is: 12,142.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,967.20 : 32,931.36 = 8,100 : x
  2. Step 2: Convert to fraction form
    21,967.20/32,931.36 = 8,100/x
  3. Step 3: Cross multiply
    21,967.20x = 32,931.36 × 8,100
  4. Step 4: Simplify right side
    21,967.20x = 266,744,016
  5. Step 5: Solve for x
    x = 266,744,016/21,967.20
  6. Step 6: Final answer
    x = 12,142.83

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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.