Home / 12,135.92-18,203.96-4,238.39

Finding the Fourth Proportional to 12,135.92, 18,203.96 and 4,238.39

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Solution

The fourth proportional to 12,135.92, 18,203.96 and 4,238.39 is: 6,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.92 : 18,203.96 = 4,238.39 : x
  2. Step 2: Convert to fraction form
    12,135.92/18,203.96 = 4,238.39/x
  3. Step 3: Cross multiply
    12,135.92x = 18,203.96 × 4,238.39
  4. Step 4: Simplify right side
    12,135.92x = 77,155,482.02
  5. Step 5: Solve for x
    x = 77,155,482.02/12,135.92
  6. Step 6: Final answer
    x = 6,357.61

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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.