Home / 9,918.88-13,687.17-5,669.09

Finding the Fourth Proportional to 9,918.88, 13,687.17 and 5,669.09

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Solution

The fourth proportional to 9,918.88, 13,687.17 and 5,669.09 is: 7,822.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.88 : 13,687.17 = 5,669.09 : x
  2. Step 2: Convert to fraction form
    9,918.88/13,687.17 = 5,669.09/x
  3. Step 3: Cross multiply
    9,918.88x = 13,687.17 × 5,669.09
  4. Step 4: Simplify right side
    9,918.88x = 77,593,798.58
  5. Step 5: Solve for x
    x = 77,593,798.58/9,918.88
  6. Step 6: Final answer
    x = 7,822.84

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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.