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Finding the Fourth Proportional to 19,293.74, 28,941.73 and 7,447.57

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Solution

The fourth proportional to 19,293.74, 28,941.73 and 7,447.57 is: 11,171.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,293.74 : 28,941.73 = 7,447.57 : x
  2. Step 2: Convert to fraction form
    19,293.74/28,941.73 = 7,447.57/x
  3. Step 3: Cross multiply
    19,293.74x = 28,941.73 × 7,447.57
  4. Step 4: Simplify right side
    19,293.74x = 215,545,469.12
  5. Step 5: Solve for x
    x = 215,545,469.12/19,293.74
  6. Step 6: Final answer
    x = 11,171.78

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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.