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Finding the Fourth Proportional to 30,773.64, 42,473.70 and 18,028.20

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Solution

The fourth proportional to 30,773.64, 42,473.70 and 18,028.20 is: 24,882.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,773.64 : 42,473.70 = 18,028.20 : x
  2. Step 2: Convert to fraction form
    30,773.64/42,473.70 = 18,028.20/x
  3. Step 3: Cross multiply
    30,773.64x = 42,473.70 × 18,028.20
  4. Step 4: Simplify right side
    30,773.64x = 765,724,358.34
  5. Step 5: Solve for x
    x = 765,724,358.34/30,773.64
  6. Step 6: Final answer
    x = 24,882.48

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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.