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Finding the Fourth Proportional to 11,939, 17,893.68 and 7,557.68

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Solution

The fourth proportional to 11,939, 17,893.68 and 7,557.68 is: 11,327.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939 : 17,893.68 = 7,557.68 : x
  2. Step 2: Convert to fraction form
    11,939/17,893.68 = 7,557.68/x
  3. Step 3: Cross multiply
    11,939x = 17,893.68 × 7,557.68
  4. Step 4: Simplify right side
    11,939x = 135,234,707.46
  5. Step 5: Solve for x
    x = 135,234,707.46/11,939
  6. Step 6: Final answer
    x = 11,327.14

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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.