Home / 18,812.05-28,222.32-9,456.55

Finding the Fourth Proportional to 18,812.05, 28,222.32 and 9,456.55

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Solution

The fourth proportional to 18,812.05, 28,222.32 and 9,456.55 is: 14,186.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.05 : 28,222.32 = 9,456.55 : x
  2. Step 2: Convert to fraction form
    18,812.05/28,222.32 = 9,456.55/x
  3. Step 3: Cross multiply
    18,812.05x = 28,222.32 × 9,456.55
  4. Step 4: Simplify right side
    18,812.05x = 266,885,745.10
  5. Step 5: Solve for x
    x = 266,885,745.10/18,812.05
  6. Step 6: Final answer
    x = 14,186.96

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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.