Home / 11,391.17-15,711.32-8,365.33

Finding the Fourth Proportional to 11,391.17, 15,711.32 and 8,365.33

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Solution

The fourth proportional to 11,391.17, 15,711.32 and 8,365.33 is: 11,537.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.17 : 15,711.32 = 8,365.33 : x
  2. Step 2: Convert to fraction form
    11,391.17/15,711.32 = 8,365.33/x
  3. Step 3: Cross multiply
    11,391.17x = 15,711.32 × 8,365.33
  4. Step 4: Simplify right side
    11,391.17x = 131,430,385.72
  5. Step 5: Solve for x
    x = 131,430,385.72/11,391.17
  6. Step 6: Final answer
    x = 11,537.92

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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.