Home / 30,239.88-45,359.82-11,515.56

Finding the Fourth Proportional to 30,239.88, 45,359.82 and 11,515.56

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Solution

The fourth proportional to 30,239.88, 45,359.82 and 11,515.56 is: 17,273.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,239.88 : 45,359.82 = 11,515.56 : x
  2. Step 2: Convert to fraction form
    30,239.88/45,359.82 = 11,515.56/x
  3. Step 3: Cross multiply
    30,239.88x = 45,359.82 × 11,515.56
  4. Step 4: Simplify right side
    30,239.88x = 522,343,728.80
  5. Step 5: Solve for x
    x = 522,343,728.80/30,239.88
  6. Step 6: Final answer
    x = 17,273.34

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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.