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Finding the Fourth Proportional to 18,305.25, 27,455.41 and 5,158.63

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Solution

The fourth proportional to 18,305.25, 27,455.41 and 5,158.63 is: 7,737.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.25 : 27,455.41 = 5,158.63 : x
  2. Step 2: Convert to fraction form
    18,305.25/27,455.41 = 5,158.63/x
  3. Step 3: Cross multiply
    18,305.25x = 27,455.41 × 5,158.63
  4. Step 4: Simplify right side
    18,305.25x = 141,632,301.69
  5. Step 5: Solve for x
    x = 141,632,301.69/18,305.25
  6. Step 6: Final answer
    x = 7,737.25

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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.