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Finding the Fourth Proportional to 22,612.80, 33,909.60 and 10,929.60

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Solution

The fourth proportional to 22,612.80, 33,909.60 and 10,929.60 is: 16,389.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,612.80 : 33,909.60 = 10,929.60 : x
  2. Step 2: Convert to fraction form
    22,612.80/33,909.60 = 10,929.60/x
  3. Step 3: Cross multiply
    22,612.80x = 33,909.60 × 10,929.60
  4. Step 4: Simplify right side
    22,612.80x = 370,618,364.16
  5. Step 5: Solve for x
    x = 370,618,364.16/22,612.80
  6. Step 6: Final answer
    x = 16,389.76

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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.