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Finding the Fourth Proportional to 18,616.86, 27,921.48 and 5,465.70

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Solution

The fourth proportional to 18,616.86, 27,921.48 and 5,465.70 is: 8,197.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.86 : 27,921.48 = 5,465.70 : x
  2. Step 2: Convert to fraction form
    18,616.86/27,921.48 = 5,465.70/x
  3. Step 3: Cross multiply
    18,616.86x = 27,921.48 × 5,465.70
  4. Step 4: Simplify right side
    18,616.86x = 152,610,433.24
  5. Step 5: Solve for x
    x = 152,610,433.24/18,616.86
  6. Step 6: Final answer
    x = 8,197.43

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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.