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Finding the Fourth Proportional to 18,126.40, 27,173.40 and 7,029.40

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Solution

The fourth proportional to 18,126.40, 27,173.40 and 7,029.40 is: 10,537.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.40 : 27,173.40 = 7,029.40 : x
  2. Step 2: Convert to fraction form
    18,126.40/27,173.40 = 7,029.40/x
  3. Step 3: Cross multiply
    18,126.40x = 27,173.40 × 7,029.40
  4. Step 4: Simplify right side
    18,126.40x = 191,012,697.96
  5. Step 5: Solve for x
    x = 191,012,697.96/18,126.40
  6. Step 6: Final answer
    x = 10,537.82

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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.