Home / 20,156.23-30,227.10-7,672.93

Finding the Fourth Proportional to 20,156.23, 30,227.10 and 7,672.93

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Solution

The fourth proportional to 20,156.23, 30,227.10 and 7,672.93 is: 11,506.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.23 : 30,227.10 = 7,672.93 : x
  2. Step 2: Convert to fraction form
    20,156.23/30,227.10 = 7,672.93/x
  3. Step 3: Cross multiply
    20,156.23x = 30,227.10 × 7,672.93
  4. Step 4: Simplify right side
    20,156.23x = 231,930,422.40
  5. Step 5: Solve for x
    x = 231,930,422.40/20,156.23
  6. Step 6: Final answer
    x = 11,506.64

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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.