Home / 13,167.88-19,722.66-12,902.20

Finding the Fourth Proportional to 13,167.88, 19,722.66 and 12,902.20

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Solution

The fourth proportional to 13,167.88, 19,722.66 and 12,902.20 is: 19,324.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.88 : 19,722.66 = 12,902.20 : x
  2. Step 2: Convert to fraction form
    13,167.88/19,722.66 = 12,902.20/x
  3. Step 3: Cross multiply
    13,167.88x = 19,722.66 × 12,902.20
  4. Step 4: Simplify right side
    13,167.88x = 254,465,703.85
  5. Step 5: Solve for x
    x = 254,465,703.85/13,167.88
  6. Step 6: Final answer
    x = 19,324.73

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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.