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Finding the Fourth Proportional to 20,662.24, 30,968.76 and 10,798.88

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Solution

The fourth proportional to 20,662.24, 30,968.76 and 10,798.88 is: 16,185.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.24 : 30,968.76 = 10,798.88 : x
  2. Step 2: Convert to fraction form
    20,662.24/30,968.76 = 10,798.88/x
  3. Step 3: Cross multiply
    20,662.24x = 30,968.76 × 10,798.88
  4. Step 4: Simplify right side
    20,662.24x = 334,427,922.99
  5. Step 5: Solve for x
    x = 334,427,922.99/20,662.24
  6. Step 6: Final answer
    x = 16,185.46

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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.