Home / 11,813.40-17,720.13-3,493.56

Finding the Fourth Proportional to 11,813.40, 17,720.13 and 3,493.56

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Solution

The fourth proportional to 11,813.40, 17,720.13 and 3,493.56 is: 5,240.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.40 : 17,720.13 = 3,493.56 : x
  2. Step 2: Convert to fraction form
    11,813.40/17,720.13 = 3,493.56/x
  3. Step 3: Cross multiply
    11,813.40x = 17,720.13 × 3,493.56
  4. Step 4: Simplify right side
    11,813.40x = 61,906,337.36
  5. Step 5: Solve for x
    x = 61,906,337.36/11,813.40
  6. Step 6: Final answer
    x = 5,240.35

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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.