Home / 22,394.20-30,908.40-12,840.50

Finding the Fourth Proportional to 22,394.20, 30,908.40 and 12,840.50

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Solution

The fourth proportional to 22,394.20, 30,908.40 and 12,840.50 is: 17,722.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,394.20 : 30,908.40 = 12,840.50 : x
  2. Step 2: Convert to fraction form
    22,394.20/30,908.40 = 12,840.50/x
  3. Step 3: Cross multiply
    22,394.20x = 30,908.40 × 12,840.50
  4. Step 4: Simplify right side
    22,394.20x = 396,879,310.20
  5. Step 5: Solve for x
    x = 396,879,310.20/22,394.20
  6. Step 6: Final answer
    x = 17,722.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.