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Finding the Fourth Proportional to 25,997.80, 39,004.54 and 10,997.20

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Solution

The fourth proportional to 25,997.80, 39,004.54 and 10,997.20 is: 16,499.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,997.80 : 39,004.54 = 10,997.20 : x
  2. Step 2: Convert to fraction form
    25,997.80/39,004.54 = 10,997.20/x
  3. Step 3: Cross multiply
    25,997.80x = 39,004.54 × 10,997.20
  4. Step 4: Simplify right side
    25,997.80x = 428,940,822.92
  5. Step 5: Solve for x
    x = 428,940,822.92/25,997.80
  6. Step 6: Final answer
    x = 16,499.12

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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.