Home / 15,286.73-21,108.20-9,630.50

Finding the Fourth Proportional to 15,286.73, 21,108.20 and 9,630.50

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Solution

The fourth proportional to 15,286.73, 21,108.20 and 9,630.50 is: 13,297.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.73 : 21,108.20 = 9,630.50 : x
  2. Step 2: Convert to fraction form
    15,286.73/21,108.20 = 9,630.50/x
  3. Step 3: Cross multiply
    15,286.73x = 21,108.20 × 9,630.50
  4. Step 4: Simplify right side
    15,286.73x = 203,282,366.41
  5. Step 5: Solve for x
    x = 203,282,366.41/15,286.73
  6. Step 6: Final answer
    x = 13,297.97

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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.