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Finding the Fourth Proportional to 22,080.76, 30,440.22 and 15,782.20

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Solution

The fourth proportional to 22,080.76, 30,440.22 and 15,782.20 is: 21,757.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,080.76 : 30,440.22 = 15,782.20 : x
  2. Step 2: Convert to fraction form
    22,080.76/30,440.22 = 15,782.20/x
  3. Step 3: Cross multiply
    22,080.76x = 30,440.22 × 15,782.20
  4. Step 4: Simplify right side
    22,080.76x = 480,413,640.08
  5. Step 5: Solve for x
    x = 480,413,640.08/22,080.76
  6. Step 6: Final answer
    x = 21,757.12

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Half scale
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Double scale
Find fourth proportional to 22,081.76, 30,441.60 and 15,783.20
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.