Home / 21,866.58-30,178.44-12,436.56

Finding the Fourth Proportional to 21,866.58, 30,178.44 and 12,436.56

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Solution

The fourth proportional to 21,866.58, 30,178.44 and 12,436.56 is: 17,163.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.58 : 30,178.44 = 12,436.56 : x
  2. Step 2: Convert to fraction form
    21,866.58/30,178.44 = 12,436.56/x
  3. Step 3: Cross multiply
    21,866.58x = 30,178.44 × 12,436.56
  4. Step 4: Simplify right side
    21,866.58x = 375,315,979.77
  5. Step 5: Solve for x
    x = 375,315,979.77/21,866.58
  6. Step 6: Final answer
    x = 17,163.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.