Home / 21,196.20-31,751.10-10,813.80

Finding the Fourth Proportional to 21,196.20, 31,751.10 and 10,813.80

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Solution

The fourth proportional to 21,196.20, 31,751.10 and 10,813.80 is: 16,198.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,196.20 : 31,751.10 = 10,813.80 : x
  2. Step 2: Convert to fraction form
    21,196.20/31,751.10 = 10,813.80/x
  3. Step 3: Cross multiply
    21,196.20x = 31,751.10 × 10,813.80
  4. Step 4: Simplify right side
    21,196.20x = 343,350,045.18
  5. Step 5: Solve for x
    x = 343,350,045.18/21,196.20
  6. Step 6: Final answer
    x = 16,198.66

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1.5x scale

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.