Home / 20,833.74-31,236.03-7,682.58

Finding the Fourth Proportional to 20,833.74, 31,236.03 and 7,682.58

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Solution

The fourth proportional to 20,833.74, 31,236.03 and 7,682.58 is: 11,518.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.74 : 31,236.03 = 7,682.58 : x
  2. Step 2: Convert to fraction form
    20,833.74/31,236.03 = 7,682.58/x
  3. Step 3: Cross multiply
    20,833.74x = 31,236.03 × 7,682.58
  4. Step 4: Simplify right side
    20,833.74x = 239,973,299.36
  5. Step 5: Solve for x
    x = 239,973,299.36/20,833.74
  6. Step 6: Final answer
    x = 11,518.49

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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.