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Finding the Fourth Proportional to 16,161.92, 22,300.80 and 10,865.60

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Solution

The fourth proportional to 16,161.92, 22,300.80 and 10,865.60 is: 14,992.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,161.92 : 22,300.80 = 10,865.60 : x
  2. Step 2: Convert to fraction form
    16,161.92/22,300.80 = 10,865.60/x
  3. Step 3: Cross multiply
    16,161.92x = 22,300.80 × 10,865.60
  4. Step 4: Simplify right side
    16,161.92x = 242,311,572.48
  5. Step 5: Solve for x
    x = 242,311,572.48/16,161.92
  6. Step 6: Final answer
    x = 14,992.75

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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.