Home / 12,228.30-18,342.45-2,994.30

Finding the Fourth Proportional to 12,228.30, 18,342.45 and 2,994.30

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Solution

The fourth proportional to 12,228.30, 18,342.45 and 2,994.30 is: 4,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.30 : 18,342.45 = 2,994.30 : x
  2. Step 2: Convert to fraction form
    12,228.30/18,342.45 = 2,994.30/x
  3. Step 3: Cross multiply
    12,228.30x = 18,342.45 × 2,994.30
  4. Step 4: Simplify right side
    12,228.30x = 54,922,798.04
  5. Step 5: Solve for x
    x = 54,922,798.04/12,228.30
  6. Step 6: Final answer
    x = 4,491.45

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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.