Home / 12,154.95-18,231.92-3,840.94

Finding the Fourth Proportional to 12,154.95, 18,231.92 and 3,840.94

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Solution

The fourth proportional to 12,154.95, 18,231.92 and 3,840.94 is: 5,761.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,154.95 : 18,231.92 = 3,840.94 : x
  2. Step 2: Convert to fraction form
    12,154.95/18,231.92 = 3,840.94/x
  3. Step 3: Cross multiply
    12,154.95x = 18,231.92 × 3,840.94
  4. Step 4: Simplify right side
    12,154.95x = 70,027,728.79
  5. Step 5: Solve for x
    x = 70,027,728.79/12,154.95
  6. Step 6: Final answer
    x = 5,761.25

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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.