Home / 9,918.56-13,687.61-5,669.71

Finding the Fourth Proportional to 9,918.56, 13,687.61 and 5,669.71

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Solution

The fourth proportional to 9,918.56, 13,687.61 and 5,669.71 is: 7,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.56 : 13,687.61 = 5,669.71 : x
  2. Step 2: Convert to fraction form
    9,918.56/13,687.61 = 5,669.71/x
  3. Step 3: Cross multiply
    9,918.56x = 13,687.61 × 5,669.71
  4. Step 4: Simplify right side
    9,918.56x = 77,604,716.73
  5. Step 5: Solve for x
    x = 77,604,716.73/9,918.56
  6. Step 6: Final answer
    x = 7,824.20

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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.