Home / 12,486.71-18,731.33-4,164.48

Finding the Fourth Proportional to 12,486.71, 18,731.33 and 4,164.48

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Solution

The fourth proportional to 12,486.71, 18,731.33 and 4,164.48 is: 6,247.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.71 : 18,731.33 = 4,164.48 : x
  2. Step 2: Convert to fraction form
    12,486.71/18,731.33 = 4,164.48/x
  3. Step 3: Cross multiply
    12,486.71x = 18,731.33 × 4,164.48
  4. Step 4: Simplify right side
    12,486.71x = 78,006,267.38
  5. Step 5: Solve for x
    x = 78,006,267.38/12,486.71
  6. Step 6: Final answer
    x = 6,247.14

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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.