Home / 12,581.42-18,865.65-4,680.68

Finding the Fourth Proportional to 12,581.42, 18,865.65 and 4,680.68

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Solution

The fourth proportional to 12,581.42, 18,865.65 and 4,680.68 is: 7,018.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.42 : 18,865.65 = 4,680.68 : x
  2. Step 2: Convert to fraction form
    12,581.42/18,865.65 = 4,680.68/x
  3. Step 3: Cross multiply
    12,581.42x = 18,865.65 × 4,680.68
  4. Step 4: Simplify right side
    12,581.42x = 88,304,070.64
  5. Step 5: Solve for x
    x = 88,304,070.64/12,581.42
  6. Step 6: Final answer
    x = 7,018.61

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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.