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Finding the Fourth Proportional to 11,420.92, 17,131.12 and 5,264.92

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Solution

The fourth proportional to 11,420.92, 17,131.12 and 5,264.92 is: 7,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.92 : 17,131.12 = 5,264.92 : x
  2. Step 2: Convert to fraction form
    11,420.92/17,131.12 = 5,264.92/x
  3. Step 3: Cross multiply
    11,420.92x = 17,131.12 × 5,264.92
  4. Step 4: Simplify right side
    11,420.92x = 90,193,976.31
  5. Step 5: Solve for x
    x = 90,193,976.31/11,420.92
  6. Step 6: Final answer
    x = 7,897.26

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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.