Home / 12,451.80-18,678.22-4,132.56

Finding the Fourth Proportional to 12,451.80, 18,678.22 and 4,132.56

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Solution

The fourth proportional to 12,451.80, 18,678.22 and 4,132.56 is: 6,199.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451.80 : 18,678.22 = 4,132.56 : x
  2. Step 2: Convert to fraction form
    12,451.80/18,678.22 = 4,132.56/x
  3. Step 3: Cross multiply
    12,451.80x = 18,678.22 × 4,132.56
  4. Step 4: Simplify right side
    12,451.80x = 77,188,864.84
  5. Step 5: Solve for x
    x = 77,188,864.84/12,451.80
  6. Step 6: Final answer
    x = 6,199.01

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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.