Home / 13,506.29-18,635.88-8,198.15

Finding the Fourth Proportional to 13,506.29, 18,635.88 and 8,198.15

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Solution

The fourth proportional to 13,506.29, 18,635.88 and 8,198.15 is: 11,311.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.29 : 18,635.88 = 8,198.15 : x
  2. Step 2: Convert to fraction form
    13,506.29/18,635.88 = 8,198.15/x
  3. Step 3: Cross multiply
    13,506.29x = 18,635.88 × 8,198.15
  4. Step 4: Simplify right side
    13,506.29x = 152,779,739.62
  5. Step 5: Solve for x
    x = 152,779,739.62/13,506.29
  6. Step 6: Final answer
    x = 11,311.75

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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.