Home / 13,524.50-18,676.66-12,788.22

Finding the Fourth Proportional to 13,524.50, 18,676.66 and 12,788.22

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Solution

The fourth proportional to 13,524.50, 18,676.66 and 12,788.22 is: 17,659.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,524.50 : 18,676.66 = 12,788.22 : x
  2. Step 2: Convert to fraction form
    13,524.50/18,676.66 = 12,788.22/x
  3. Step 3: Cross multiply
    13,524.50x = 18,676.66 × 12,788.22
  4. Step 4: Simplify right side
    13,524.50x = 238,841,236.95
  5. Step 5: Solve for x
    x = 238,841,236.95/13,524.50
  6. Step 6: Final answer
    x = 17,659.89

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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.