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Finding the Fourth Proportional to 17,958.60, 26,941.78 and 5,478.30

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Solution

The fourth proportional to 17,958.60, 26,941.78 and 5,478.30 is: 8,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,958.60 : 26,941.78 = 5,478.30 : x
  2. Step 2: Convert to fraction form
    17,958.60/26,941.78 = 5,478.30/x
  3. Step 3: Cross multiply
    17,958.60x = 26,941.78 × 5,478.30
  4. Step 4: Simplify right side
    17,958.60x = 147,595,153.37
  5. Step 5: Solve for x
    x = 147,595,153.37/17,958.60
  6. Step 6: Final answer
    x = 8,218.63

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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.