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Finding the Fourth Proportional to 17,913.29, 26,828.95 and 8,559.88

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Solution

The fourth proportional to 17,913.29, 26,828.95 and 8,559.88 is: 12,820.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,913.29 : 26,828.95 = 8,559.88 : x
  2. Step 2: Convert to fraction form
    17,913.29/26,828.95 = 8,559.88/x
  3. Step 3: Cross multiply
    17,913.29x = 26,828.95 × 8,559.88
  4. Step 4: Simplify right side
    17,913.29x = 229,652,415.58
  5. Step 5: Solve for x
    x = 229,652,415.58/17,913.29
  6. Step 6: Final answer
    x = 12,820.23

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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.