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Finding the Fourth Proportional to 30,608.44, 42,229.01 and 19,278.88

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Solution

The fourth proportional to 30,608.44, 42,229.01 and 19,278.88 is: 26,598.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,608.44 : 42,229.01 = 19,278.88 : x
  2. Step 2: Convert to fraction form
    30,608.44/42,229.01 = 19,278.88/x
  3. Step 3: Cross multiply
    30,608.44x = 42,229.01 × 19,278.88
  4. Step 4: Simplify right side
    30,608.44x = 814,127,958.93
  5. Step 5: Solve for x
    x = 814,127,958.93/30,608.44
  6. Step 6: Final answer
    x = 26,598.15

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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.