Home / 12,453.75-18,684.27-3,688.89

Finding the Fourth Proportional to 12,453.75, 18,684.27 and 3,688.89

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Solution

The fourth proportional to 12,453.75, 18,684.27 and 3,688.89 is: 5,534.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.75 : 18,684.27 = 3,688.89 : x
  2. Step 2: Convert to fraction form
    12,453.75/18,684.27 = 3,688.89/x
  3. Step 3: Cross multiply
    12,453.75x = 18,684.27 × 3,688.89
  4. Step 4: Simplify right side
    12,453.75x = 68,924,251.79
  5. Step 5: Solve for x
    x = 68,924,251.79/12,453.75
  6. Step 6: Final answer
    x = 5,534.42

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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.