Home / 12,487.97-17,232.63-6,821.57

Finding the Fourth Proportional to 12,487.97, 17,232.63 and 6,821.57

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Solution

The fourth proportional to 12,487.97, 17,232.63 and 6,821.57 is: 9,413.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.97 : 17,232.63 = 6,821.57 : x
  2. Step 2: Convert to fraction form
    12,487.97/17,232.63 = 6,821.57/x
  3. Step 3: Cross multiply
    12,487.97x = 17,232.63 × 6,821.57
  4. Step 4: Simplify right side
    12,487.97x = 117,553,591.83
  5. Step 5: Solve for x
    x = 117,553,591.83/12,487.97
  6. Step 6: Final answer
    x = 9,413.35

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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.