Home / 18,910.61-28,383.42-9,557.21

Finding the Fourth Proportional to 18,910.61, 28,383.42 and 9,557.21

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Solution

The fourth proportional to 18,910.61, 28,383.42 and 9,557.21 is: 14,344.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.61 : 28,383.42 = 9,557.21 : x
  2. Step 2: Convert to fraction form
    18,910.61/28,383.42 = 9,557.21/x
  3. Step 3: Cross multiply
    18,910.61x = 28,383.42 × 9,557.21
  4. Step 4: Simplify right side
    18,910.61x = 271,266,163.54
  5. Step 5: Solve for x
    x = 271,266,163.54/18,910.61
  6. Step 6: Final answer
    x = 14,344.66

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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.