Home / 12,874.20-19,340.10-12,349.40

Finding the Fourth Proportional to 12,874.20, 19,340.10 and 12,349.40

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Solution

The fourth proportional to 12,874.20, 19,340.10 and 12,349.40 is: 18,551.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,874.20 : 19,340.10 = 12,349.40 : x
  2. Step 2: Convert to fraction form
    12,874.20/19,340.10 = 12,349.40/x
  3. Step 3: Cross multiply
    12,874.20x = 19,340.10 × 12,349.40
  4. Step 4: Simplify right side
    12,874.20x = 238,838,630.94
  5. Step 5: Solve for x
    x = 238,838,630.94/12,874.20
  6. Step 6: Final answer
    x = 18,551.73

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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.