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Finding the Fourth Proportional to 18,796.12, 28,193.30 and 7,700.08

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Solution

The fourth proportional to 18,796.12, 28,193.30 and 7,700.08 is: 11,549.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.12 : 28,193.30 = 7,700.08 : x
  2. Step 2: Convert to fraction form
    18,796.12/28,193.30 = 7,700.08/x
  3. Step 3: Cross multiply
    18,796.12x = 28,193.30 × 7,700.08
  4. Step 4: Simplify right side
    18,796.12x = 217,090,665.46
  5. Step 5: Solve for x
    x = 217,090,665.46/18,796.12
  6. Step 6: Final answer
    x = 11,549.76

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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.