Home / 19,099.75-28,661.15-8,155.75

Finding the Fourth Proportional to 19,099.75, 28,661.15 and 8,155.75

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Solution

The fourth proportional to 19,099.75, 28,661.15 and 8,155.75 is: 12,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,099.75 : 28,661.15 = 8,155.75 : x
  2. Step 2: Convert to fraction form
    19,099.75/28,661.15 = 8,155.75/x
  3. Step 3: Cross multiply
    19,099.75x = 28,661.15 × 8,155.75
  4. Step 4: Simplify right side
    19,099.75x = 233,753,174.11
  5. Step 5: Solve for x
    x = 233,753,174.11/19,099.75
  6. Step 6: Final answer
    x = 12,238.55

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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.