Home / 12,451.58-18,679.18-3,685.34

Finding the Fourth Proportional to 12,451.58, 18,679.18 and 3,685.34

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Solution

The fourth proportional to 12,451.58, 18,679.18 and 3,685.34 is: 5,528.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451.58 : 18,679.18 = 3,685.34 : x
  2. Step 2: Convert to fraction form
    12,451.58/18,679.18 = 3,685.34/x
  3. Step 3: Cross multiply
    12,451.58x = 18,679.18 × 3,685.34
  4. Step 4: Simplify right side
    12,451.58x = 68,839,129.22
  5. Step 5: Solve for x
    x = 68,839,129.22/12,451.58
  6. Step 6: Final answer
    x = 5,528.55

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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.