Home / 30,660.60-45,982.26-13,149.48

Finding the Fourth Proportional to 30,660.60, 45,982.26 and 13,149.48

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Solution

The fourth proportional to 30,660.60, 45,982.26 and 13,149.48 is: 19,720.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,660.60 : 45,982.26 = 13,149.48 : x
  2. Step 2: Convert to fraction form
    30,660.60/45,982.26 = 13,149.48/x
  3. Step 3: Cross multiply
    30,660.60x = 45,982.26 × 13,149.48
  4. Step 4: Simplify right side
    30,660.60x = 604,642,808.22
  5. Step 5: Solve for x
    x = 604,642,808.22/30,660.60
  6. Step 6: Final answer
    x = 19,720.51

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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.