Home / 20,784.94-31,177.41-5,202.57

Finding the Fourth Proportional to 20,784.94, 31,177.41 and 5,202.57

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Solution

The fourth proportional to 20,784.94, 31,177.41 and 5,202.57 is: 7,803.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.94 : 31,177.41 = 5,202.57 : x
  2. Step 2: Convert to fraction form
    20,784.94/31,177.41 = 5,202.57/x
  3. Step 3: Cross multiply
    20,784.94x = 31,177.41 × 5,202.57
  4. Step 4: Simplify right side
    20,784.94x = 162,202,657.94
  5. Step 5: Solve for x
    x = 162,202,657.94/20,784.94
  6. Step 6: Final answer
    x = 7,803.86

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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.