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Finding the Fourth Proportional to 17,728.60, 26,580.10 and 9,939.80

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Solution

The fourth proportional to 17,728.60, 26,580.10 and 9,939.80 is: 14,902.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,728.60 : 26,580.10 = 9,939.80 : x
  2. Step 2: Convert to fraction form
    17,728.60/26,580.10 = 9,939.80/x
  3. Step 3: Cross multiply
    17,728.60x = 26,580.10 × 9,939.80
  4. Step 4: Simplify right side
    17,728.60x = 264,200,877.98
  5. Step 5: Solve for x
    x = 264,200,877.98/17,728.60
  6. Step 6: Final answer
    x = 14,902.52

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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.