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Finding the Fourth Proportional to 20,483.28, 30,735.36 and 9,962.64

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Solution

The fourth proportional to 20,483.28, 30,735.36 and 9,962.64 is: 14,949.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.28 : 30,735.36 = 9,962.64 : x
  2. Step 2: Convert to fraction form
    20,483.28/30,735.36 = 9,962.64/x
  3. Step 3: Cross multiply
    20,483.28x = 30,735.36 × 9,962.64
  4. Step 4: Simplify right side
    20,483.28x = 306,205,326.95
  5. Step 5: Solve for x
    x = 306,205,326.95/20,483.28
  6. Step 6: Final answer
    x = 14,949.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.