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Finding the Fourth Proportional to 18,309.95, 27,464.93 and 6,620.43

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Solution

The fourth proportional to 18,309.95, 27,464.93 and 6,620.43 is: 9,930.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.95 : 27,464.93 = 6,620.43 : x
  2. Step 2: Convert to fraction form
    18,309.95/27,464.93 = 6,620.43/x
  3. Step 3: Cross multiply
    18,309.95x = 27,464.93 × 6,620.43
  4. Step 4: Simplify right side
    18,309.95x = 181,829,613.42
  5. Step 5: Solve for x
    x = 181,829,613.42/18,309.95
  6. Step 6: Final answer
    x = 9,930.65

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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.