Home / 20,672.37-30,989.79-7,515.41

Finding the Fourth Proportional to 20,672.37, 30,989.79 and 7,515.41

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Solution

The fourth proportional to 20,672.37, 30,989.79 and 7,515.41 is: 11,266.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.37 : 30,989.79 = 7,515.41 : x
  2. Step 2: Convert to fraction form
    20,672.37/30,989.79 = 7,515.41/x
  3. Step 3: Cross multiply
    20,672.37x = 30,989.79 × 7,515.41
  4. Step 4: Simplify right side
    20,672.37x = 232,900,822.71
  5. Step 5: Solve for x
    x = 232,900,822.71/20,672.37
  6. Step 6: Final answer
    x = 11,266.29

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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.