Home / 13,912.20-19,203.08-10,380.20

Finding the Fourth Proportional to 13,912.20, 19,203.08 and 10,380.20

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Solution

The fourth proportional to 13,912.20, 19,203.08 and 10,380.20 is: 14,327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.20 : 19,203.08 = 10,380.20 : x
  2. Step 2: Convert to fraction form
    13,912.20/19,203.08 = 10,380.20/x
  3. Step 3: Cross multiply
    13,912.20x = 19,203.08 × 10,380.20
  4. Step 4: Simplify right side
    13,912.20x = 199,331,663.10
  5. Step 5: Solve for x
    x = 199,331,663.10/13,912.20
  6. Step 6: Final answer
    x = 14,327.83

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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.