Home / 20,972.68-31,453.98-6,177.60

Finding the Fourth Proportional to 20,972.68, 31,453.98 and 6,177.60

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Solution

The fourth proportional to 20,972.68, 31,453.98 and 6,177.60 is: 9,264.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.68 : 31,453.98 = 6,177.60 : x
  2. Step 2: Convert to fraction form
    20,972.68/31,453.98 = 6,177.60/x
  3. Step 3: Cross multiply
    20,972.68x = 31,453.98 × 6,177.60
  4. Step 4: Simplify right side
    20,972.68x = 194,310,106.85
  5. Step 5: Solve for x
    x = 194,310,106.85/20,972.68
  6. Step 6: Final answer
    x = 9,264.92

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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.