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Finding the Fourth Proportional to 10,928.70, 16,405.20 and 6,773.40

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Solution

The fourth proportional to 10,928.70, 16,405.20 and 6,773.40 is: 10,167.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.70 : 16,405.20 = 6,773.40 : x
  2. Step 2: Convert to fraction form
    10,928.70/16,405.20 = 6,773.40/x
  3. Step 3: Cross multiply
    10,928.70x = 16,405.20 × 6,773.40
  4. Step 4: Simplify right side
    10,928.70x = 111,118,981.68
  5. Step 5: Solve for x
    x = 111,118,981.68/10,928.70
  6. Step 6: Final answer
    x = 10,167.63

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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.