Home / 11,782.17-17,673.27-3,990.39

Finding the Fourth Proportional to 11,782.17, 17,673.27 and 3,990.39

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Solution

The fourth proportional to 11,782.17, 17,673.27 and 3,990.39 is: 5,985.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,782.17 : 17,673.27 = 3,990.39 : x
  2. Step 2: Convert to fraction form
    11,782.17/17,673.27 = 3,990.39/x
  3. Step 3: Cross multiply
    11,782.17x = 17,673.27 × 3,990.39
  4. Step 4: Simplify right side
    11,782.17x = 70,523,239.88
  5. Step 5: Solve for x
    x = 70,523,239.88/11,782.17
  6. Step 6: Final answer
    x = 5,985.59

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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.