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Finding the Fourth Proportional to 17,666.80, 26,490.60 and 7,279.60

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Solution

The fourth proportional to 17,666.80, 26,490.60 and 7,279.60 is: 10,915.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,666.80 : 26,490.60 = 7,279.60 : x
  2. Step 2: Convert to fraction form
    17,666.80/26,490.60 = 7,279.60/x
  3. Step 3: Cross multiply
    17,666.80x = 26,490.60 × 7,279.60
  4. Step 4: Simplify right side
    17,666.80x = 192,840,971.76
  5. Step 5: Solve for x
    x = 192,840,971.76/17,666.80
  6. Step 6: Final answer
    x = 10,915.44

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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.