Home / 15,412.76-21,269.61-8,339.19

Finding the Fourth Proportional to 15,412.76, 21,269.61 and 8,339.19

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Solution

The fourth proportional to 15,412.76, 21,269.61 and 8,339.19 is: 11,508.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.76 : 21,269.61 = 8,339.19 : x
  2. Step 2: Convert to fraction form
    15,412.76/21,269.61 = 8,339.19/x
  3. Step 3: Cross multiply
    15,412.76x = 21,269.61 × 8,339.19
  4. Step 4: Simplify right side
    15,412.76x = 177,371,319.02
  5. Step 5: Solve for x
    x = 177,371,319.02/15,412.76
  6. Step 6: Final answer
    x = 11,508.09

Related Problems

Find fourth proportional to 7,706.38, 10,634.81 and 4,169.60
Half scale
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Double scale
Find fourth proportional to 15,413.76, 21,270.99 and 8,340.19
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.