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Finding the Fourth Proportional to 28,909.60, 43,396.80 and 22,364.80

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Solution

The fourth proportional to 28,909.60, 43,396.80 and 22,364.80 is: 33,572.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.60 : 43,396.80 = 22,364.80 : x
  2. Step 2: Convert to fraction form
    28,909.60/43,396.80 = 22,364.80/x
  3. Step 3: Cross multiply
    28,909.60x = 43,396.80 × 22,364.80
  4. Step 4: Simplify right side
    28,909.60x = 970,560,752.64
  5. Step 5: Solve for x
    x = 970,560,752.64/28,909.60
  6. Step 6: Final answer
    x = 33,572.27

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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.