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Finding the Fourth Proportional to 11,208.88, 15,471.48 and 7,493.68

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Solution

The fourth proportional to 11,208.88, 15,471.48 and 7,493.68 is: 10,343.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,208.88 : 15,471.48 = 7,493.68 : x
  2. Step 2: Convert to fraction form
    11,208.88/15,471.48 = 7,493.68/x
  3. Step 3: Cross multiply
    11,208.88x = 15,471.48 × 7,493.68
  4. Step 4: Simplify right side
    11,208.88x = 115,938,320.25
  5. Step 5: Solve for x
    x = 115,938,320.25/11,208.88
  6. Step 6: Final answer
    x = 10,343.43

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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.