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Finding the Fourth Proportional to 18,675.74, 25,767.02 and 11,118.29

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Solution

The fourth proportional to 18,675.74, 25,767.02 and 11,118.29 is: 15,339.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.74 : 25,767.02 = 11,118.29 : x
  2. Step 2: Convert to fraction form
    18,675.74/25,767.02 = 11,118.29/x
  3. Step 3: Cross multiply
    18,675.74x = 25,767.02 × 11,118.29
  4. Step 4: Simplify right side
    18,675.74x = 286,485,016.37
  5. Step 5: Solve for x
    x = 286,485,016.37/18,675.74
  6. Step 6: Final answer
    x = 15,339.96

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Half scale
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Double scale
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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.