Home / 20,852.61-31,247.94-10,961.90

Finding the Fourth Proportional to 20,852.61, 31,247.94 and 10,961.90

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Solution

The fourth proportional to 20,852.61, 31,247.94 and 10,961.90 is: 16,426.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.61 : 31,247.94 = 10,961.90 : x
  2. Step 2: Convert to fraction form
    20,852.61/31,247.94 = 10,961.90/x
  3. Step 3: Cross multiply
    20,852.61x = 31,247.94 × 10,961.90
  4. Step 4: Simplify right side
    20,852.61x = 342,536,795.53
  5. Step 5: Solve for x
    x = 342,536,795.53/20,852.61
  6. Step 6: Final answer
    x = 16,426.57

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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.