Home / 15,516.82-21,413.60-8,443.63

Finding the Fourth Proportional to 15,516.82, 21,413.60 and 8,443.63

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Solution

The fourth proportional to 15,516.82, 21,413.60 and 8,443.63 is: 11,652.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.82 : 21,413.60 = 8,443.63 : x
  2. Step 2: Convert to fraction form
    15,516.82/21,413.60 = 8,443.63/x
  3. Step 3: Cross multiply
    15,516.82x = 21,413.60 × 8,443.63
  4. Step 4: Simplify right side
    15,516.82x = 180,808,473.15
  5. Step 5: Solve for x
    x = 180,808,473.15/15,516.82
  6. Step 6: Final answer
    x = 11,652.42

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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.