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Finding the Fourth Proportional to 17,881.28, 26,827.68 and 7,490.24

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Solution

The fourth proportional to 17,881.28, 26,827.68 and 7,490.24 is: 11,237.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,881.28 : 26,827.68 = 7,490.24 : x
  2. Step 2: Convert to fraction form
    17,881.28/26,827.68 = 7,490.24/x
  3. Step 3: Cross multiply
    17,881.28x = 26,827.68 × 7,490.24
  4. Step 4: Simplify right side
    17,881.28x = 200,945,761.84
  5. Step 5: Solve for x
    x = 200,945,761.84/17,881.28
  6. Step 6: Final answer
    x = 11,237.77

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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.