Home / 28,479.97-42,711.89-11,819.39

Finding the Fourth Proportional to 28,479.97, 42,711.89 and 11,819.39

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Solution

The fourth proportional to 28,479.97, 42,711.89 and 11,819.39 is: 17,725.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.97 : 42,711.89 = 11,819.39 : x
  2. Step 2: Convert to fraction form
    28,479.97/42,711.89 = 11,819.39/x
  3. Step 3: Cross multiply
    28,479.97x = 42,711.89 × 11,819.39
  4. Step 4: Simplify right side
    28,479.97x = 504,828,533.23
  5. Step 5: Solve for x
    x = 504,828,533.23/28,479.97
  6. Step 6: Final answer
    x = 17,725.74

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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.