Home / 20,571.18-30,837.33-7,420.02

Finding the Fourth Proportional to 20,571.18, 30,837.33 and 7,420.02

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Solution

The fourth proportional to 20,571.18, 30,837.33 and 7,420.02 is: 11,123.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.18 : 30,837.33 = 7,420.02 : x
  2. Step 2: Convert to fraction form
    20,571.18/30,837.33 = 7,420.02/x
  3. Step 3: Cross multiply
    20,571.18x = 30,837.33 × 7,420.02
  4. Step 4: Simplify right side
    20,571.18x = 228,813,605.35
  5. Step 5: Solve for x
    x = 228,813,605.35/20,571.18
  6. Step 6: Final answer
    x = 11,123.02

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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.