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Finding the Fourth Proportional to 19,228.95, 28,843.43 and 8,132.76

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Solution

The fourth proportional to 19,228.95, 28,843.43 and 8,132.76 is: 12,199.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,228.95 : 28,843.43 = 8,132.76 : x
  2. Step 2: Convert to fraction form
    19,228.95/28,843.43 = 8,132.76/x
  3. Step 3: Cross multiply
    19,228.95x = 28,843.43 × 8,132.76
  4. Step 4: Simplify right side
    19,228.95x = 234,576,653.10
  5. Step 5: Solve for x
    x = 234,576,653.10/19,228.95
  6. Step 6: Final answer
    x = 12,199.14

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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.