Home / 12,906.20-19,374.90-8,226.20

Finding the Fourth Proportional to 12,906.20, 19,374.90 and 8,226.20

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Solution

The fourth proportional to 12,906.20, 19,374.90 and 8,226.20 is: 12,349.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906.20 : 19,374.90 = 8,226.20 : x
  2. Step 2: Convert to fraction form
    12,906.20/19,374.90 = 8,226.20/x
  3. Step 3: Cross multiply
    12,906.20x = 19,374.90 × 8,226.20
  4. Step 4: Simplify right side
    12,906.20x = 159,381,802.38
  5. Step 5: Solve for x
    x = 159,381,802.38/12,906.20
  6. Step 6: Final answer
    x = 12,349.24

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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.