Home / 12,688.25-19,034.19-3,923.84

Finding the Fourth Proportional to 12,688.25, 19,034.19 and 3,923.84

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Solution

The fourth proportional to 12,688.25, 19,034.19 and 3,923.84 is: 5,886.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.25 : 19,034.19 = 3,923.84 : x
  2. Step 2: Convert to fraction form
    12,688.25/19,034.19 = 3,923.84/x
  3. Step 3: Cross multiply
    12,688.25x = 19,034.19 × 3,923.84
  4. Step 4: Simplify right side
    12,688.25x = 74,687,116.09
  5. Step 5: Solve for x
    x = 74,687,116.09/12,688.25
  6. Step 6: Final answer
    x = 5,886.32

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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.