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Finding the Fourth Proportional to 11,287.88, 15,578.22 and 6,572.48

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Solution

The fourth proportional to 11,287.88, 15,578.22 and 6,572.48 is: 9,070.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,287.88 : 15,578.22 = 6,572.48 : x
  2. Step 2: Convert to fraction form
    11,287.88/15,578.22 = 6,572.48/x
  3. Step 3: Cross multiply
    11,287.88x = 15,578.22 × 6,572.48
  4. Step 4: Simplify right side
    11,287.88x = 102,387,539.39
  5. Step 5: Solve for x
    x = 102,387,539.39/11,287.88
  6. Step 6: Final answer
    x = 9,070.57

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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.