Home / 18,778.19-28,150.85-9,405.07

Finding the Fourth Proportional to 18,778.19, 28,150.85 and 9,405.07

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Solution

The fourth proportional to 18,778.19, 28,150.85 and 9,405.07 is: 14,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.19 : 28,150.85 = 9,405.07 : x
  2. Step 2: Convert to fraction form
    18,778.19/28,150.85 = 9,405.07/x
  3. Step 3: Cross multiply
    18,778.19x = 28,150.85 × 9,405.07
  4. Step 4: Simplify right side
    18,778.19x = 264,760,667.95
  5. Step 5: Solve for x
    x = 264,760,667.95/18,778.19
  6. Step 6: Final answer
    x = 14,099.37

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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.