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Finding the Fourth Proportional to 18,119.11, 25,007.10 and 11,049.63

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Solution

The fourth proportional to 18,119.11, 25,007.10 and 11,049.63 is: 15,250.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.11 : 25,007.10 = 11,049.63 : x
  2. Step 2: Convert to fraction form
    18,119.11/25,007.10 = 11,049.63/x
  3. Step 3: Cross multiply
    18,119.11x = 25,007.10 × 11,049.63
  4. Step 4: Simplify right side
    18,119.11x = 276,319,301.06
  5. Step 5: Solve for x
    x = 276,319,301.06/18,119.11
  6. Step 6: Final answer
    x = 15,250.16

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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.