Home / 28,479.60-42,711.32-11,819.03

Finding the Fourth Proportional to 28,479.60, 42,711.32 and 11,819.03

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Solution

The fourth proportional to 28,479.60, 42,711.32 and 11,819.03 is: 17,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.60 : 42,711.32 = 11,819.03 : x
  2. Step 2: Convert to fraction form
    28,479.60/42,711.32 = 11,819.03/x
  3. Step 3: Cross multiply
    28,479.60x = 42,711.32 × 11,819.03
  4. Step 4: Simplify right side
    28,479.60x = 504,806,099.77
  5. Step 5: Solve for x
    x = 504,806,099.77/28,479.60
  6. Step 6: Final answer
    x = 17,725.18

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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.