Home / 18,712.57-25,819.56-11,909.33

Finding the Fourth Proportional to 18,712.57, 25,819.56 and 11,909.33

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Solution

The fourth proportional to 18,712.57, 25,819.56 and 11,909.33 is: 16,432.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.57 : 25,819.56 = 11,909.33 : x
  2. Step 2: Convert to fraction form
    18,712.57/25,819.56 = 11,909.33/x
  3. Step 3: Cross multiply
    18,712.57x = 25,819.56 × 11,909.33
  4. Step 4: Simplify right side
    18,712.57x = 307,493,628.22
  5. Step 5: Solve for x
    x = 307,493,628.22/18,712.57
  6. Step 6: Final answer
    x = 16,432.46

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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.