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Finding the Fourth Proportional to 11,265, 15,540.30 and 7,287.36

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Solution

The fourth proportional to 11,265, 15,540.30 and 7,287.36 is: 10,053.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,265 : 15,540.30 = 7,287.36 : x
  2. Step 2: Convert to fraction form
    11,265/15,540.30 = 7,287.36/x
  3. Step 3: Cross multiply
    11,265x = 15,540.30 × 7,287.36
  4. Step 4: Simplify right side
    11,265x = 113,247,760.61
  5. Step 5: Solve for x
    x = 113,247,760.61/11,265
  6. Step 6: Final answer
    x = 10,053.06

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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.