Home / 15,382.76-21,228.22-8,309.18

Finding the Fourth Proportional to 15,382.76, 21,228.22 and 8,309.18

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Solution

The fourth proportional to 15,382.76, 21,228.22 and 8,309.18 is: 11,466.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.76 : 21,228.22 = 8,309.18 : x
  2. Step 2: Convert to fraction form
    15,382.76/21,228.22 = 8,309.18/x
  3. Step 3: Cross multiply
    15,382.76x = 21,228.22 × 8,309.18
  4. Step 4: Simplify right side
    15,382.76x = 176,389,101.06
  5. Step 5: Solve for x
    x = 176,389,101.06/15,382.76
  6. Step 6: Final answer
    x = 11,466.67

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Half scale
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Double scale
Find fourth proportional to 15,383.76, 21,229.60 and 8,310.18
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.