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Finding the Fourth Proportional to 18,051.70, 27,067.54 and 7,385.55

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Solution

The fourth proportional to 18,051.70, 27,067.54 and 7,385.55 is: 11,074.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,051.70 : 27,067.54 = 7,385.55 : x
  2. Step 2: Convert to fraction form
    18,051.70/27,067.54 = 7,385.55/x
  3. Step 3: Cross multiply
    18,051.70x = 27,067.54 × 7,385.55
  4. Step 4: Simplify right side
    18,051.70x = 199,908,534.71
  5. Step 5: Solve for x
    x = 199,908,534.71/18,051.70
  6. Step 6: Final answer
    x = 11,074.23

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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.