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Finding the Fourth Proportional to 11,355.39, 16,944.39 and 8,988.57

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Solution

The fourth proportional to 11,355.39, 16,944.39 and 8,988.57 is: 13,412.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.39 : 16,944.39 = 8,988.57 : x
  2. Step 2: Convert to fraction form
    11,355.39/16,944.39 = 8,988.57/x
  3. Step 3: Cross multiply
    11,355.39x = 16,944.39 × 8,988.57
  4. Step 4: Simplify right side
    11,355.39x = 152,305,835.62
  5. Step 5: Solve for x
    x = 152,305,835.62/11,355.39
  6. Step 6: Final answer
    x = 13,412.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.