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Finding the Fourth Proportional to 19,119.54, 28,679.32 and 8,023.25

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Solution

The fourth proportional to 19,119.54, 28,679.32 and 8,023.25 is: 12,034.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,119.54 : 28,679.32 = 8,023.25 : x
  2. Step 2: Convert to fraction form
    19,119.54/28,679.32 = 8,023.25/x
  3. Step 3: Cross multiply
    19,119.54x = 28,679.32 × 8,023.25
  4. Step 4: Simplify right side
    19,119.54x = 230,101,390.79
  5. Step 5: Solve for x
    x = 230,101,390.79/19,119.54
  6. Step 6: Final answer
    x = 12,034.88

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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.