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Finding the Fourth Proportional to 18,555.06, 25,606.08 and 11,103.06

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Solution

The fourth proportional to 18,555.06, 25,606.08 and 11,103.06 is: 15,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.06 : 25,606.08 = 11,103.06 : x
  2. Step 2: Convert to fraction form
    18,555.06/25,606.08 = 11,103.06/x
  3. Step 3: Cross multiply
    18,555.06x = 25,606.08 × 11,103.06
  4. Step 4: Simplify right side
    18,555.06x = 284,305,842.60
  5. Step 5: Solve for x
    x = 284,305,842.60/18,555.06
  6. Step 6: Final answer
    x = 15,322.28

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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.