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Finding the Fourth Proportional to 9,998.76, 13,795.74 and 6,806.28

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Solution

The fourth proportional to 9,998.76, 13,795.74 and 6,806.28 is: 9,390.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.76 : 13,795.74 = 6,806.28 : x
  2. Step 2: Convert to fraction form
    9,998.76/13,795.74 = 6,806.28/x
  3. Step 3: Cross multiply
    9,998.76x = 13,795.74 × 6,806.28
  4. Step 4: Simplify right side
    9,998.76x = 93,897,669.25
  5. Step 5: Solve for x
    x = 93,897,669.25/9,998.76
  6. Step 6: Final answer
    x = 9,390.93

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Half scale
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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.