Home / 12,486.89-17,232.08-6,821.62

Finding the Fourth Proportional to 12,486.89, 17,232.08 and 6,821.62

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Solution

The fourth proportional to 12,486.89, 17,232.08 and 6,821.62 is: 9,413.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.89 : 17,232.08 = 6,821.62 : x
  2. Step 2: Convert to fraction form
    12,486.89/17,232.08 = 6,821.62/x
  3. Step 3: Cross multiply
    12,486.89x = 17,232.08 × 6,821.62
  4. Step 4: Simplify right side
    12,486.89x = 117,550,624.38
  5. Step 5: Solve for x
    x = 117,550,624.38/12,486.89
  6. Step 6: Final answer
    x = 9,413.92

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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.