Home / 20,782.54-31,178.19-6,741.47

Finding the Fourth Proportional to 20,782.54, 31,178.19 and 6,741.47

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Solution

The fourth proportional to 20,782.54, 31,178.19 and 6,741.47 is: 10,113.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.54 : 31,178.19 = 6,741.47 : x
  2. Step 2: Convert to fraction form
    20,782.54/31,178.19 = 6,741.47/x
  3. Step 3: Cross multiply
    20,782.54x = 31,178.19 × 6,741.47
  4. Step 4: Simplify right side
    20,782.54x = 210,186,910.48
  5. Step 5: Solve for x
    x = 210,186,910.48/20,782.54
  6. Step 6: Final answer
    x = 10,113.63

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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.