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Finding the Fourth Proportional to 18,621.16, 27,892.86 and 17,342.44

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Solution

The fourth proportional to 18,621.16, 27,892.86 and 17,342.44 is: 25,977.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.16 : 27,892.86 = 17,342.44 : x
  2. Step 2: Convert to fraction form
    18,621.16/27,892.86 = 17,342.44/x
  3. Step 3: Cross multiply
    18,621.16x = 27,892.86 × 17,342.44
  4. Step 4: Simplify right side
    18,621.16x = 483,730,250.98
  5. Step 5: Solve for x
    x = 483,730,250.98/18,621.16
  6. Step 6: Final answer
    x = 25,977.45

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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.