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Finding the Fourth Proportional to 17,699.30, 26,548.96 and 12,135.78

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Solution

The fourth proportional to 17,699.30, 26,548.96 and 12,135.78 is: 18,203.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,699.30 : 26,548.96 = 12,135.78 : x
  2. Step 2: Convert to fraction form
    17,699.30/26,548.96 = 12,135.78/x
  3. Step 3: Cross multiply
    17,699.30x = 26,548.96 × 12,135.78
  4. Step 4: Simplify right side
    17,699.30x = 322,192,325.33
  5. Step 5: Solve for x
    x = 322,192,325.33/17,699.30
  6. Step 6: Final answer
    x = 18,203.67

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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.