Home / 18,689.07-28,028.82-5,538.36

Finding the Fourth Proportional to 18,689.07, 28,028.82 and 5,538.36

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Solution

The fourth proportional to 18,689.07, 28,028.82 and 5,538.36 is: 8,306.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.07 : 28,028.82 = 5,538.36 : x
  2. Step 2: Convert to fraction form
    18,689.07/28,028.82 = 5,538.36/x
  3. Step 3: Cross multiply
    18,689.07x = 28,028.82 × 5,538.36
  4. Step 4: Simplify right side
    18,689.07x = 155,233,667.84
  5. Step 5: Solve for x
    x = 155,233,667.84/18,689.07
  6. Step 6: Final answer
    x = 8,306.12

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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.