Home / 18,684.18-27,976.80-15,411.87

Finding the Fourth Proportional to 18,684.18, 27,976.80 and 15,411.87

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Solution

The fourth proportional to 18,684.18, 27,976.80 and 15,411.87 is: 23,077.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.18 : 27,976.80 = 15,411.87 : x
  2. Step 2: Convert to fraction form
    18,684.18/27,976.80 = 15,411.87/x
  3. Step 3: Cross multiply
    18,684.18x = 27,976.80 × 15,411.87
  4. Step 4: Simplify right side
    18,684.18x = 431,174,804.62
  5. Step 5: Solve for x
    x = 431,174,804.62/18,684.18
  6. Step 6: Final answer
    x = 23,077.00

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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.