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Finding the Fourth Proportional to 17,889.90, 26,835.09 and 5,410.02

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Solution

The fourth proportional to 17,889.90, 26,835.09 and 5,410.02 is: 8,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,889.90 : 26,835.09 = 5,410.02 : x
  2. Step 2: Convert to fraction form
    17,889.90/26,835.09 = 5,410.02/x
  3. Step 3: Cross multiply
    17,889.90x = 26,835.09 × 5,410.02
  4. Step 4: Simplify right side
    17,889.90x = 145,178,373.60
  5. Step 5: Solve for x
    x = 145,178,373.60/17,889.90
  6. Step 6: Final answer
    x = 8,115.10

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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.