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Finding the Fourth Proportional to 18,116.88, 25,003.14 and 11,047.47

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Solution

The fourth proportional to 18,116.88, 25,003.14 and 11,047.47 is: 15,246.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,116.88 : 25,003.14 = 11,047.47 : x
  2. Step 2: Convert to fraction form
    18,116.88/25,003.14 = 11,047.47/x
  3. Step 3: Cross multiply
    18,116.88x = 25,003.14 × 11,047.47
  4. Step 4: Simplify right side
    18,116.88x = 276,221,439.06
  5. Step 5: Solve for x
    x = 276,221,439.06/18,116.88
  6. Step 6: Final answer
    x = 15,246.63

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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.