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Finding the Fourth Proportional to 19,958.10, 29,920.91 and 7,471.13

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Solution

The fourth proportional to 19,958.10, 29,920.91 and 7,471.13 is: 11,200.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,958.10 : 29,920.91 = 7,471.13 : x
  2. Step 2: Convert to fraction form
    19,958.10/29,920.91 = 7,471.13/x
  3. Step 3: Cross multiply
    19,958.10x = 29,920.91 × 7,471.13
  4. Step 4: Simplify right side
    19,958.10x = 223,542,858.72
  5. Step 5: Solve for x
    x = 223,542,858.72/19,958.10
  6. Step 6: Final answer
    x = 11,200.61

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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.