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Finding the Fourth Proportional to 18,128.95, 27,168.13 and 9,791.01

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Solution

The fourth proportional to 18,128.95, 27,168.13 and 9,791.01 is: 14,672.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.95 : 27,168.13 = 9,791.01 : x
  2. Step 2: Convert to fraction form
    18,128.95/27,168.13 = 9,791.01/x
  3. Step 3: Cross multiply
    18,128.95x = 27,168.13 × 9,791.01
  4. Step 4: Simplify right side
    18,128.95x = 266,003,444.75
  5. Step 5: Solve for x
    x = 266,003,444.75/18,128.95
  6. Step 6: Final answer
    x = 14,672.86

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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.