Home / 13,322.98-18,383.25-8,543.78

Finding the Fourth Proportional to 13,322.98, 18,383.25 and 8,543.78

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Solution

The fourth proportional to 13,322.98, 18,383.25 and 8,543.78 is: 11,788.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,322.98 : 18,383.25 = 8,543.78 : x
  2. Step 2: Convert to fraction form
    13,322.98/18,383.25 = 8,543.78/x
  3. Step 3: Cross multiply
    13,322.98x = 18,383.25 × 8,543.78
  4. Step 4: Simplify right side
    13,322.98x = 157,062,452.75
  5. Step 5: Solve for x
    x = 157,062,452.75/13,322.98
  6. Step 6: Final answer
    x = 11,788.84

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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.