Home / 12,216.92-18,330.56-8,272.63

Finding the Fourth Proportional to 12,216.92, 18,330.56 and 8,272.63

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Solution

The fourth proportional to 12,216.92, 18,330.56 and 8,272.63 is: 12,412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.92 : 18,330.56 = 8,272.63 : x
  2. Step 2: Convert to fraction form
    12,216.92/18,330.56 = 8,272.63/x
  3. Step 3: Cross multiply
    12,216.92x = 18,330.56 × 8,272.63
  4. Step 4: Simplify right side
    12,216.92x = 151,641,898.14
  5. Step 5: Solve for x
    x = 151,641,898.14/12,216.92
  6. Step 6: Final answer
    x = 12,412.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.