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Finding the Fourth Proportional to 30,551.44, 42,157.24 and 18,610.44

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Solution

The fourth proportional to 30,551.44, 42,157.24 and 18,610.44 is: 25,680.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,551.44 : 42,157.24 = 18,610.44 : x
  2. Step 2: Convert to fraction form
    30,551.44/42,157.24 = 18,610.44/x
  3. Step 3: Cross multiply
    30,551.44x = 42,157.24 × 18,610.44
  4. Step 4: Simplify right side
    30,551.44x = 784,564,785.59
  5. Step 5: Solve for x
    x = 784,564,785.59/30,551.44
  6. Step 6: Final answer
    x = 25,680.12

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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.