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Finding the Fourth Proportional to 12,929.62, 19,394.22 and 7,371.10

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Solution

The fourth proportional to 12,929.62, 19,394.22 and 7,371.10 is: 11,056.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.62 : 19,394.22 = 7,371.10 : x
  2. Step 2: Convert to fraction form
    12,929.62/19,394.22 = 7,371.10/x
  3. Step 3: Cross multiply
    12,929.62x = 19,394.22 × 7,371.10
  4. Step 4: Simplify right side
    12,929.62x = 142,956,735.04
  5. Step 5: Solve for x
    x = 142,956,735.04/12,929.62
  6. Step 6: Final answer
    x = 11,056.53

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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.