Home / 12,168.21-16,791.18-7,131.74

Finding the Fourth Proportional to 12,168.21, 16,791.18 and 7,131.74

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Solution

The fourth proportional to 12,168.21, 16,791.18 and 7,131.74 is: 9,841.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.21 : 16,791.18 = 7,131.74 : x
  2. Step 2: Convert to fraction form
    12,168.21/16,791.18 = 7,131.74/x
  3. Step 3: Cross multiply
    12,168.21x = 16,791.18 × 7,131.74
  4. Step 4: Simplify right side
    12,168.21x = 119,750,246.10
  5. Step 5: Solve for x
    x = 119,750,246.10/12,168.21
  6. Step 6: Final answer
    x = 9,841.24

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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.