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Finding the Fourth Proportional to 18,607.87, 27,911.26 and 5,460.49

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Solution

The fourth proportional to 18,607.87, 27,911.26 and 5,460.49 is: 8,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.87 : 27,911.26 = 5,460.49 : x
  2. Step 2: Convert to fraction form
    18,607.87/27,911.26 = 5,460.49/x
  3. Step 3: Cross multiply
    18,607.87x = 27,911.26 × 5,460.49
  4. Step 4: Simplify right side
    18,607.87x = 152,409,156.12
  5. Step 5: Solve for x
    x = 152,409,156.12/18,607.87
  6. Step 6: Final answer
    x = 8,190.58

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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.