Home / 13,151.80-19,727.70-6,131.80

Finding the Fourth Proportional to 13,151.80, 19,727.70 and 6,131.80

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Solution

The fourth proportional to 13,151.80, 19,727.70 and 6,131.80 is: 9,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.80 : 19,727.70 = 6,131.80 : x
  2. Step 2: Convert to fraction form
    13,151.80/19,727.70 = 6,131.80/x
  3. Step 3: Cross multiply
    13,151.80x = 19,727.70 × 6,131.80
  4. Step 4: Simplify right side
    13,151.80x = 120,966,310.86
  5. Step 5: Solve for x
    x = 120,966,310.86/13,151.80
  6. Step 6: Final answer
    x = 9,197.70

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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.