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Finding the Fourth Proportional to 17,142.77, 25,709.70 and 7,276.97

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Solution

The fourth proportional to 17,142.77, 25,709.70 and 7,276.97 is: 10,913.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,142.77 : 25,709.70 = 7,276.97 : x
  2. Step 2: Convert to fraction form
    17,142.77/25,709.70 = 7,276.97/x
  3. Step 3: Cross multiply
    17,142.77x = 25,709.70 × 7,276.97
  4. Step 4: Simplify right side
    17,142.77x = 187,088,715.61
  5. Step 5: Solve for x
    x = 187,088,715.61/17,142.77
  6. Step 6: Final answer
    x = 10,913.56

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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.