Home / 13,791.12-20,686.23-8,207.07

Finding the Fourth Proportional to 13,791.12, 20,686.23 and 8,207.07

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Solution

The fourth proportional to 13,791.12, 20,686.23 and 8,207.07 is: 12,310.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.12 : 20,686.23 = 8,207.07 : x
  2. Step 2: Convert to fraction form
    13,791.12/20,686.23 = 8,207.07/x
  3. Step 3: Cross multiply
    13,791.12x = 20,686.23 × 8,207.07
  4. Step 4: Simplify right side
    13,791.12x = 169,773,337.65
  5. Step 5: Solve for x
    x = 169,773,337.65/13,791.12
  6. Step 6: Final answer
    x = 12,310.34

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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.