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Finding the Fourth Proportional to 17,716.85, 26,558.85 and 9,920.19

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Solution

The fourth proportional to 17,716.85, 26,558.85 and 9,920.19 is: 14,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,716.85 : 26,558.85 = 9,920.19 : x
  2. Step 2: Convert to fraction form
    17,716.85/26,558.85 = 9,920.19/x
  3. Step 3: Cross multiply
    17,716.85x = 26,558.85 × 9,920.19
  4. Step 4: Simplify right side
    17,716.85x = 263,468,838.18
  5. Step 5: Solve for x
    x = 263,468,838.18/17,716.85
  6. Step 6: Final answer
    x = 14,871.09

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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.