Home / 18,731.69-25,838.78-11,660.39

Finding the Fourth Proportional to 18,731.69, 25,838.78 and 11,660.39

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Solution

The fourth proportional to 18,731.69, 25,838.78 and 11,660.39 is: 16,084.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.69 : 25,838.78 = 11,660.39 : x
  2. Step 2: Convert to fraction form
    18,731.69/25,838.78 = 11,660.39/x
  3. Step 3: Cross multiply
    18,731.69x = 25,838.78 × 11,660.39
  4. Step 4: Simplify right side
    18,731.69x = 301,290,251.92
  5. Step 5: Solve for x
    x = 301,290,251.92/18,731.69
  6. Step 6: Final answer
    x = 16,084.52

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1.5x scale

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.