Home / 10,605.09-15,910.21-3,209.13

Finding the Fourth Proportional to 10,605.09, 15,910.21 and 3,209.13

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Solution

The fourth proportional to 10,605.09, 15,910.21 and 3,209.13 is: 4,814.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,605.09 : 15,910.21 = 3,209.13 : x
  2. Step 2: Convert to fraction form
    10,605.09/15,910.21 = 3,209.13/x
  3. Step 3: Cross multiply
    10,605.09x = 15,910.21 × 3,209.13
  4. Step 4: Simplify right side
    10,605.09x = 51,057,936.23
  5. Step 5: Solve for x
    x = 51,057,936.23/10,605.09
  6. Step 6: Final answer
    x = 4,814.47

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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.