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Finding the Fourth Proportional to 18,351.10, 27,518.55 and 7,254.10

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Solution

The fourth proportional to 18,351.10, 27,518.55 and 7,254.10 is: 10,877.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.10 : 27,518.55 = 7,254.10 : x
  2. Step 2: Convert to fraction form
    18,351.10/27,518.55 = 7,254.10/x
  3. Step 3: Cross multiply
    18,351.10x = 27,518.55 × 7,254.10
  4. Step 4: Simplify right side
    18,351.10x = 199,622,313.56
  5. Step 5: Solve for x
    x = 199,622,313.56/18,351.10
  6. Step 6: Final answer
    x = 10,877.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.