Home / 13,578.98-18,741.60-8,855.06

Finding the Fourth Proportional to 13,578.98, 18,741.60 and 8,855.06

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Solution

The fourth proportional to 13,578.98, 18,741.60 and 8,855.06 is: 12,221.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.98 : 18,741.60 = 8,855.06 : x
  2. Step 2: Convert to fraction form
    13,578.98/18,741.60 = 8,855.06/x
  3. Step 3: Cross multiply
    13,578.98x = 18,741.60 × 8,855.06
  4. Step 4: Simplify right side
    13,578.98x = 165,957,898.79
  5. Step 5: Solve for x
    x = 165,957,898.79/13,578.98
  6. Step 6: Final answer
    x = 12,221.68

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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.