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Finding the Fourth Proportional to 17,909.08, 26,822.70 and 8,555.68

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Solution

The fourth proportional to 17,909.08, 26,822.70 and 8,555.68 is: 12,813.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,909.08 : 26,822.70 = 8,555.68 : x
  2. Step 2: Convert to fraction form
    17,909.08/26,822.70 = 8,555.68/x
  3. Step 3: Cross multiply
    17,909.08x = 26,822.70 × 8,555.68
  4. Step 4: Simplify right side
    17,909.08x = 229,486,437.94
  5. Step 5: Solve for x
    x = 229,486,437.94/17,909.08
  6. Step 6: Final answer
    x = 12,813.97

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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.