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Finding the Fourth Proportional to 10,620.70, 15,928.92 and 10,093.80

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Solution

The fourth proportional to 10,620.70, 15,928.92 and 10,093.80 is: 15,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.70 : 15,928.92 = 10,093.80 : x
  2. Step 2: Convert to fraction form
    10,620.70/15,928.92 = 10,093.80/x
  3. Step 3: Cross multiply
    10,620.70x = 15,928.92 × 10,093.80
  4. Step 4: Simplify right side
    10,620.70x = 160,783,332.70
  5. Step 5: Solve for x
    x = 160,783,332.70/10,620.70
  6. Step 6: Final answer
    x = 15,138.68

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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.