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Finding the Fourth Proportional to 12,413.76, 17,130.12 and 8,885.28

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Solution

The fourth proportional to 12,413.76, 17,130.12 and 8,885.28 is: 12,261.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,413.76 : 17,130.12 = 8,885.28 : x
  2. Step 2: Convert to fraction form
    12,413.76/17,130.12 = 8,885.28/x
  3. Step 3: Cross multiply
    12,413.76x = 17,130.12 × 8,885.28
  4. Step 4: Simplify right side
    12,413.76x = 152,205,912.63
  5. Step 5: Solve for x
    x = 152,205,912.63/12,413.76
  6. Step 6: Final answer
    x = 12,261.06

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Half scale
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Double scale
Find fourth proportional to 12,414.76, 17,131.50 and 8,886.28
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.