Home / 20,710.55-31,081.32-8,062.30

Finding the Fourth Proportional to 20,710.55, 31,081.32 and 8,062.30

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Solution

The fourth proportional to 20,710.55, 31,081.32 and 8,062.30 is: 12,099.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.55 : 31,081.32 = 8,062.30 : x
  2. Step 2: Convert to fraction form
    20,710.55/31,081.32 = 8,062.30/x
  3. Step 3: Cross multiply
    20,710.55x = 31,081.32 × 8,062.30
  4. Step 4: Simplify right side
    20,710.55x = 250,586,965.09
  5. Step 5: Solve for x
    x = 250,586,965.09/20,710.55
  6. Step 6: Final answer
    x = 12,099.48

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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.