Home / 20,384.21-30,576.31-7,236.58

Finding the Fourth Proportional to 20,384.21, 30,576.31 and 7,236.58

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Solution

The fourth proportional to 20,384.21, 30,576.31 and 7,236.58 is: 10,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,384.21 : 30,576.31 = 7,236.58 : x
  2. Step 2: Convert to fraction form
    20,384.21/30,576.31 = 7,236.58/x
  3. Step 3: Cross multiply
    20,384.21x = 30,576.31 × 7,236.58
  4. Step 4: Simplify right side
    20,384.21x = 221,267,853.57
  5. Step 5: Solve for x
    x = 221,267,853.57/20,384.21
  6. Step 6: Final answer
    x = 10,854.87

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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.