Home / 12,637.71-18,956.63-3,872.61

Finding the Fourth Proportional to 12,637.71, 18,956.63 and 3,872.61

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Solution

The fourth proportional to 12,637.71, 18,956.63 and 3,872.61 is: 5,808.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.71 : 18,956.63 = 3,872.61 : x
  2. Step 2: Convert to fraction form
    12,637.71/18,956.63 = 3,872.61/x
  3. Step 3: Cross multiply
    12,637.71x = 18,956.63 × 3,872.61
  4. Step 4: Simplify right side
    12,637.71x = 73,411,634.90
  5. Step 5: Solve for x
    x = 73,411,634.90/12,637.71
  6. Step 6: Final answer
    x = 5,808.93

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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.