Home / 13,789.53-19,023.23-8,121.57

Finding the Fourth Proportional to 13,789.53, 19,023.23 and 8,121.57

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Solution

The fourth proportional to 13,789.53, 19,023.23 and 8,121.57 is: 11,204.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.53 : 19,023.23 = 8,121.57 : x
  2. Step 2: Convert to fraction form
    13,789.53/19,023.23 = 8,121.57/x
  3. Step 3: Cross multiply
    13,789.53x = 19,023.23 × 8,121.57
  4. Step 4: Simplify right side
    13,789.53x = 154,498,420.20
  5. Step 5: Solve for x
    x = 154,498,420.20/13,789.53
  6. Step 6: Final answer
    x = 11,204.04

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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.