Home / 11,869.30-17,804.31-4,078

Finding the Fourth Proportional to 11,869.30, 17,804.31 and 4,078

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Solution

The fourth proportional to 11,869.30, 17,804.31 and 4,078 is: 6,117.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.30 : 17,804.31 = 4,078 : x
  2. Step 2: Convert to fraction form
    11,869.30/17,804.31 = 4,078/x
  3. Step 3: Cross multiply
    11,869.30x = 17,804.31 × 4,078
  4. Step 4: Simplify right side
    11,869.30x = 72,605,976.18
  5. Step 5: Solve for x
    x = 72,605,976.18/11,869.30
  6. Step 6: Final answer
    x = 6,117.12

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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.