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Finding the Fourth Proportional to 18,164.20, 27,246.30 and 12,259.30

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Solution

The fourth proportional to 18,164.20, 27,246.30 and 12,259.30 is: 18,388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,164.20 : 27,246.30 = 12,259.30 : x
  2. Step 2: Convert to fraction form
    18,164.20/27,246.30 = 12,259.30/x
  3. Step 3: Cross multiply
    18,164.20x = 27,246.30 × 12,259.30
  4. Step 4: Simplify right side
    18,164.20x = 334,020,565.59
  5. Step 5: Solve for x
    x = 334,020,565.59/18,164.20
  6. Step 6: Final answer
    x = 18,388.95

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Half scale
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Double scale
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Similar ratio
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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.