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Finding the Fourth Proportional to 19,958.40, 27,542.40 and 11,006.40

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Solution

The fourth proportional to 19,958.40, 27,542.40 and 11,006.40 is: 15,188.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,958.40 : 27,542.40 = 11,006.40 : x
  2. Step 2: Convert to fraction form
    19,958.40/27,542.40 = 11,006.40/x
  3. Step 3: Cross multiply
    19,958.40x = 27,542.40 × 11,006.40
  4. Step 4: Simplify right side
    19,958.40x = 303,142,671.36
  5. Step 5: Solve for x
    x = 303,142,671.36/19,958.40
  6. Step 6: Final answer
    x = 15,188.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.