Home / 13,445.04-20,149.10-6,857.38

Finding the Fourth Proportional to 13,445.04, 20,149.10 and 6,857.38

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Solution

The fourth proportional to 13,445.04, 20,149.10 and 6,857.38 is: 10,276.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.04 : 20,149.10 = 6,857.38 : x
  2. Step 2: Convert to fraction form
    13,445.04/20,149.10 = 6,857.38/x
  3. Step 3: Cross multiply
    13,445.04x = 20,149.10 × 6,857.38
  4. Step 4: Simplify right side
    13,445.04x = 138,170,147.21
  5. Step 5: Solve for x
    x = 138,170,147.21/13,445.04
  6. Step 6: Final answer
    x = 10,276.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.