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Finding the Fourth Proportional to 18,250.99, 25,186.41 and 9,867.49

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Solution

The fourth proportional to 18,250.99, 25,186.41 and 9,867.49 is: 13,617.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,250.99 : 25,186.41 = 9,867.49 : x
  2. Step 2: Convert to fraction form
    18,250.99/25,186.41 = 9,867.49/x
  3. Step 3: Cross multiply
    18,250.99x = 25,186.41 × 9,867.49
  4. Step 4: Simplify right side
    18,250.99x = 248,526,709.02
  5. Step 5: Solve for x
    x = 248,526,709.02/18,250.99
  6. Step 6: Final answer
    x = 13,617.16

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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.