Home / 13,167.40-19,719.10-6,997.80

Finding the Fourth Proportional to 13,167.40, 19,719.10 and 6,997.80

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Solution

The fourth proportional to 13,167.40, 19,719.10 and 6,997.80 is: 10,479.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.40 : 19,719.10 = 6,997.80 : x
  2. Step 2: Convert to fraction form
    13,167.40/19,719.10 = 6,997.80/x
  3. Step 3: Cross multiply
    13,167.40x = 19,719.10 × 6,997.80
  4. Step 4: Simplify right side
    13,167.40x = 137,990,317.98
  5. Step 5: Solve for x
    x = 137,990,317.98/13,167.40
  6. Step 6: Final answer
    x = 10,479.69

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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.