Home / 9,998.12-13,788.60-6,816.56

Finding the Fourth Proportional to 9,998.12, 13,788.60 and 6,816.56

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Solution

The fourth proportional to 9,998.12, 13,788.60 and 6,816.56 is: 9,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.12 : 13,788.60 = 6,816.56 : x
  2. Step 2: Convert to fraction form
    9,998.12/13,788.60 = 6,816.56/x
  3. Step 3: Cross multiply
    9,998.12x = 13,788.60 × 6,816.56
  4. Step 4: Simplify right side
    9,998.12x = 93,990,819.22
  5. Step 5: Solve for x
    x = 93,990,819.22/9,998.12
  6. Step 6: Final answer
    x = 9,400.85

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Double scale
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Similar ratio
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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.