Home / 12,155.22-18,232.85-8,013.72

Finding the Fourth Proportional to 12,155.22, 18,232.85 and 8,013.72

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Solution

The fourth proportional to 12,155.22, 18,232.85 and 8,013.72 is: 12,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.22 : 18,232.85 = 8,013.72 : x
  2. Step 2: Convert to fraction form
    12,155.22/18,232.85 = 8,013.72/x
  3. Step 3: Cross multiply
    12,155.22x = 18,232.85 × 8,013.72
  4. Step 4: Simplify right side
    12,155.22x = 146,112,998.03
  5. Step 5: Solve for x
    x = 146,112,998.03/12,155.22
  6. Step 6: Final answer
    x = 12,020.60

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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.