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Finding the Fourth Proportional to 20,425.54, 30,643.24 and 7,096.59

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Solution

The fourth proportional to 20,425.54, 30,643.24 and 7,096.59 is: 10,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.54 : 30,643.24 = 7,096.59 : x
  2. Step 2: Convert to fraction form
    20,425.54/30,643.24 = 7,096.59/x
  3. Step 3: Cross multiply
    20,425.54x = 30,643.24 × 7,096.59
  4. Step 4: Simplify right side
    20,425.54x = 217,462,551.68
  5. Step 5: Solve for x
    x = 217,462,551.68/20,425.54
  6. Step 6: Final answer
    x = 10,646.60

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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.