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Finding the Fourth Proportional to 17,769.60, 26,641.60 and 9,980.80

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Solution

The fourth proportional to 17,769.60, 26,641.60 and 9,980.80 is: 14,964.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,769.60 : 26,641.60 = 9,980.80 : x
  2. Step 2: Convert to fraction form
    17,769.60/26,641.60 = 9,980.80/x
  3. Step 3: Cross multiply
    17,769.60x = 26,641.60 × 9,980.80
  4. Step 4: Simplify right side
    17,769.60x = 265,904,481.28
  5. Step 5: Solve for x
    x = 265,904,481.28/17,769.60
  6. Step 6: Final answer
    x = 14,964.01

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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.