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Finding the Fourth Proportional to 17,167.78, 25,754.10 and 7,807.78

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Solution

The fourth proportional to 17,167.78, 25,754.10 and 7,807.78 is: 11,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,167.78 : 25,754.10 = 7,807.78 : x
  2. Step 2: Convert to fraction form
    17,167.78/25,754.10 = 7,807.78/x
  3. Step 3: Cross multiply
    17,167.78x = 25,754.10 × 7,807.78
  4. Step 4: Simplify right side
    17,167.78x = 201,082,346.90
  5. Step 5: Solve for x
    x = 201,082,346.90/17,167.78
  6. Step 6: Final answer
    x = 11,712.78

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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.