Home / 20,239.36-30,338.56-8,376.76

Finding the Fourth Proportional to 20,239.36, 30,338.56 and 8,376.76

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Solution

The fourth proportional to 20,239.36, 30,338.56 and 8,376.76 is: 12,556.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.36 : 30,338.56 = 8,376.76 : x
  2. Step 2: Convert to fraction form
    20,239.36/30,338.56 = 8,376.76/x
  3. Step 3: Cross multiply
    20,239.36x = 30,338.56 × 8,376.76
  4. Step 4: Simplify right side
    20,239.36x = 254,138,835.87
  5. Step 5: Solve for x
    x = 254,138,835.87/20,239.36
  6. Step 6: Final answer
    x = 12,556.66

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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.