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Finding the Fourth Proportional to 21,957.60, 32,926.80 and 8,805.60

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Solution

The fourth proportional to 21,957.60, 32,926.80 and 8,805.60 is: 13,204.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.60 : 32,926.80 = 8,805.60 : x
  2. Step 2: Convert to fraction form
    21,957.60/32,926.80 = 8,805.60/x
  3. Step 3: Cross multiply
    21,957.60x = 32,926.80 × 8,805.60
  4. Step 4: Simplify right side
    21,957.60x = 289,940,230.08
  5. Step 5: Solve for x
    x = 289,940,230.08/21,957.60
  6. Step 6: Final answer
    x = 13,204.55

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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.