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Finding the Fourth Proportional to 17,619.78, 26,411.76 and 11,050.55

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Solution

The fourth proportional to 17,619.78, 26,411.76 and 11,050.55 is: 16,564.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,619.78 : 26,411.76 = 11,050.55 : x
  2. Step 2: Convert to fraction form
    17,619.78/26,411.76 = 11,050.55/x
  3. Step 3: Cross multiply
    17,619.78x = 26,411.76 × 11,050.55
  4. Step 4: Simplify right side
    17,619.78x = 291,864,342.41
  5. Step 5: Solve for x
    x = 291,864,342.41/17,619.78
  6. Step 6: Final answer
    x = 16,564.58

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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.