Home / 13,570.80-18,730.20-8,855.04

Finding the Fourth Proportional to 13,570.80, 18,730.20 and 8,855.04

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Solution

The fourth proportional to 13,570.80, 18,730.20 and 8,855.04 is: 12,221.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.80 : 18,730.20 = 8,855.04 : x
  2. Step 2: Convert to fraction form
    13,570.80/18,730.20 = 8,855.04/x
  3. Step 3: Cross multiply
    13,570.80x = 18,730.20 × 8,855.04
  4. Step 4: Simplify right side
    13,570.80x = 165,856,670.21
  5. Step 5: Solve for x
    x = 165,856,670.21/13,570.80
  6. Step 6: Final answer
    x = 12,221.58

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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.