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Finding the Fourth Proportional to 18,853.54, 28,275.42 and 7,754.14

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Solution

The fourth proportional to 18,853.54, 28,275.42 and 7,754.14 is: 11,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.54 : 28,275.42 = 7,754.14 : x
  2. Step 2: Convert to fraction form
    18,853.54/28,275.42 = 7,754.14/x
  3. Step 3: Cross multiply
    18,853.54x = 28,275.42 × 7,754.14
  4. Step 4: Simplify right side
    18,853.54x = 219,251,565.24
  5. Step 5: Solve for x
    x = 219,251,565.24/18,853.54
  6. Step 6: Final answer
    x = 11,629.20

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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.