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Finding the Fourth Proportional to 18,191.56, 27,298.86 and 10,415.56

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Solution

The fourth proportional to 18,191.56, 27,298.86 and 10,415.56 is: 15,629.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.56 : 27,298.86 = 10,415.56 : x
  2. Step 2: Convert to fraction form
    18,191.56/27,298.86 = 10,415.56/x
  3. Step 3: Cross multiply
    18,191.56x = 27,298.86 × 10,415.56
  4. Step 4: Simplify right side
    18,191.56x = 284,332,914.26
  5. Step 5: Solve for x
    x = 284,332,914.26/18,191.56
  6. Step 6: Final answer
    x = 15,629.94

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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.