Home / 13,236.51-18,269.58-8,197.68

Finding the Fourth Proportional to 13,236.51, 18,269.58 and 8,197.68

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Solution

The fourth proportional to 13,236.51, 18,269.58 and 8,197.68 is: 11,314.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.51 : 18,269.58 = 8,197.68 : x
  2. Step 2: Convert to fraction form
    13,236.51/18,269.58 = 8,197.68/x
  3. Step 3: Cross multiply
    13,236.51x = 18,269.58 × 8,197.68
  4. Step 4: Simplify right side
    13,236.51x = 149,768,149.28
  5. Step 5: Solve for x
    x = 149,768,149.28/13,236.51
  6. Step 6: Final answer
    x = 11,314.77

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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.