Home / 15,819.70-21,836.37-11,105.14

Finding the Fourth Proportional to 15,819.70, 21,836.37 and 11,105.14

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Solution

The fourth proportional to 15,819.70, 21,836.37 and 11,105.14 is: 15,328.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.70 : 21,836.37 = 11,105.14 : x
  2. Step 2: Convert to fraction form
    15,819.70/21,836.37 = 11,105.14/x
  3. Step 3: Cross multiply
    15,819.70x = 21,836.37 × 11,105.14
  4. Step 4: Simplify right side
    15,819.70x = 242,495,945.94
  5. Step 5: Solve for x
    x = 242,495,945.94/15,819.70
  6. Step 6: Final answer
    x = 15,328.73

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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.