Home / 18,481.04-27,711.80-12,639.32

Finding the Fourth Proportional to 18,481.04, 27,711.80 and 12,639.32

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Solution

The fourth proportional to 18,481.04, 27,711.80 and 12,639.32 is: 18,952.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.04 : 27,711.80 = 12,639.32 : x
  2. Step 2: Convert to fraction form
    18,481.04/27,711.80 = 12,639.32/x
  3. Step 3: Cross multiply
    18,481.04x = 27,711.80 × 12,639.32
  4. Step 4: Simplify right side
    18,481.04x = 350,258,307.98
  5. Step 5: Solve for x
    x = 350,258,307.98/18,481.04
  6. Step 6: Final answer
    x = 18,952.31

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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.