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Finding the Fourth Proportional to 17,387.56, 26,071.62 and 7,520.68

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Solution

The fourth proportional to 17,387.56, 26,071.62 and 7,520.68 is: 11,276.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,387.56 : 26,071.62 = 7,520.68 : x
  2. Step 2: Convert to fraction form
    17,387.56/26,071.62 = 7,520.68/x
  3. Step 3: Cross multiply
    17,387.56x = 26,071.62 × 7,520.68
  4. Step 4: Simplify right side
    17,387.56x = 196,076,311.10
  5. Step 5: Solve for x
    x = 196,076,311.10/17,387.56
  6. Step 6: Final answer
    x = 11,276.82

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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.