Home / 13,524.39-18,668.86-12,105.57

Finding the Fourth Proportional to 13,524.39, 18,668.86 and 12,105.57

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Solution

The fourth proportional to 13,524.39, 18,668.86 and 12,105.57 is: 16,710.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,524.39 : 18,668.86 = 12,105.57 : x
  2. Step 2: Convert to fraction form
    13,524.39/18,668.86 = 12,105.57/x
  3. Step 3: Cross multiply
    13,524.39x = 18,668.86 × 12,105.57
  4. Step 4: Simplify right side
    13,524.39x = 225,997,276.06
  5. Step 5: Solve for x
    x = 225,997,276.06/13,524.39
  6. Step 6: Final answer
    x = 16,710.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.