Home / 12,637.68-18,955.20-3,872.64

Finding the Fourth Proportional to 12,637.68, 18,955.20 and 3,872.64

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Solution

The fourth proportional to 12,637.68, 18,955.20 and 3,872.64 is: 5,808.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.68 : 18,955.20 = 3,872.64 : x
  2. Step 2: Convert to fraction form
    12,637.68/18,955.20 = 3,872.64/x
  3. Step 3: Cross multiply
    12,637.68x = 18,955.20 × 3,872.64
  4. Step 4: Simplify right side
    12,637.68x = 73,406,665.73
  5. Step 5: Solve for x
    x = 73,406,665.73/12,637.68
  6. Step 6: Final answer
    x = 5,808.56

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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.