Home / 12,278.62-18,419.12-4,881.43

Finding the Fourth Proportional to 12,278.62, 18,419.12 and 4,881.43

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Solution

The fourth proportional to 12,278.62, 18,419.12 and 4,881.43 is: 7,322.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.62 : 18,419.12 = 4,881.43 : x
  2. Step 2: Convert to fraction form
    12,278.62/18,419.12 = 4,881.43/x
  3. Step 3: Cross multiply
    12,278.62x = 18,419.12 × 4,881.43
  4. Step 4: Simplify right side
    12,278.62x = 89,911,528.44
  5. Step 5: Solve for x
    x = 89,911,528.44/12,278.62
  6. Step 6: Final answer
    x = 7,322.61

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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.