Home / 9,986.67-13,781.49-5,510.45

Finding the Fourth Proportional to 9,986.67, 13,781.49 and 5,510.45

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Solution

The fourth proportional to 9,986.67, 13,781.49 and 5,510.45 is: 7,604.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.67 : 13,781.49 = 5,510.45 : x
  2. Step 2: Convert to fraction form
    9,986.67/13,781.49 = 5,510.45/x
  3. Step 3: Cross multiply
    9,986.67x = 13,781.49 × 5,510.45
  4. Step 4: Simplify right side
    9,986.67x = 75,942,142.66
  5. Step 5: Solve for x
    x = 75,942,142.66/9,986.67
  6. Step 6: Final answer
    x = 7,604.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.