Home / 21,505.11-32,245.37-8,342.12

Finding the Fourth Proportional to 21,505.11, 32,245.37 and 8,342.12

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Solution

The fourth proportional to 21,505.11, 32,245.37 and 8,342.12 is: 12,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505.11 : 32,245.37 = 8,342.12 : x
  2. Step 2: Convert to fraction form
    21,505.11/32,245.37 = 8,342.12/x
  3. Step 3: Cross multiply
    21,505.11x = 32,245.37 × 8,342.12
  4. Step 4: Simplify right side
    21,505.11x = 268,994,543.05
  5. Step 5: Solve for x
    x = 268,994,543.05/21,505.11
  6. Step 6: Final answer
    x = 12,508.40

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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.