Home / 13,621.26-18,784.86-8,836.20

Finding the Fourth Proportional to 13,621.26, 18,784.86 and 8,836.20

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Solution

The fourth proportional to 13,621.26, 18,784.86 and 8,836.20 is: 12,185.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.26 : 18,784.86 = 8,836.20 : x
  2. Step 2: Convert to fraction form
    13,621.26/18,784.86 = 8,836.20/x
  3. Step 3: Cross multiply
    13,621.26x = 18,784.86 × 8,836.20
  4. Step 4: Simplify right side
    13,621.26x = 165,986,779.93
  5. Step 5: Solve for x
    x = 165,986,779.93/13,621.26
  6. Step 6: Final answer
    x = 12,185.86

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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.