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Finding the Fourth Proportional to 18,604.90, 27,909.69 and 6,126.40

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Solution

The fourth proportional to 18,604.90, 27,909.69 and 6,126.40 is: 9,190.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,604.90 : 27,909.69 = 6,126.40 : x
  2. Step 2: Convert to fraction form
    18,604.90/27,909.69 = 6,126.40/x
  3. Step 3: Cross multiply
    18,604.90x = 27,909.69 × 6,126.40
  4. Step 4: Simplify right side
    18,604.90x = 170,985,924.82
  5. Step 5: Solve for x
    x = 170,985,924.82/18,604.90
  6. Step 6: Final answer
    x = 9,190.37

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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.