Home / 15,413.76-21,270.99-8,340.19

Finding the Fourth Proportional to 15,413.76, 21,270.99 and 8,340.19

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Solution

The fourth proportional to 15,413.76, 21,270.99 and 8,340.19 is: 11,509.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.76 : 21,270.99 = 8,340.19 : x
  2. Step 2: Convert to fraction form
    15,413.76/21,270.99 = 8,340.19/x
  3. Step 3: Cross multiply
    15,413.76x = 21,270.99 × 8,340.19
  4. Step 4: Simplify right side
    15,413.76x = 177,404,098.09
  5. Step 5: Solve for x
    x = 177,404,098.09/15,413.76
  6. Step 6: Final answer
    x = 11,509.46

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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.