Home / 13,439.79-18,544.82-7,471.44

Finding the Fourth Proportional to 13,439.79, 18,544.82 and 7,471.44

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Solution

The fourth proportional to 13,439.79, 18,544.82 and 7,471.44 is: 10,309.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.79 : 18,544.82 = 7,471.44 : x
  2. Step 2: Convert to fraction form
    13,439.79/18,544.82 = 7,471.44/x
  3. Step 3: Cross multiply
    13,439.79x = 18,544.82 × 7,471.44
  4. Step 4: Simplify right side
    13,439.79x = 138,556,472.58
  5. Step 5: Solve for x
    x = 138,556,472.58/13,439.79
  6. Step 6: Final answer
    x = 10,309.42

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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.