Home / 20,784.20-31,176.28-5,201.82

Finding the Fourth Proportional to 20,784.20, 31,176.28 and 5,201.82

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Solution

The fourth proportional to 20,784.20, 31,176.28 and 5,201.82 is: 7,802.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.20 : 31,176.28 = 5,201.82 : x
  2. Step 2: Convert to fraction form
    20,784.20/31,176.28 = 5,201.82/x
  3. Step 3: Cross multiply
    20,784.20x = 31,176.28 × 5,201.82
  4. Step 4: Simplify right side
    20,784.20x = 162,173,396.83
  5. Step 5: Solve for x
    x = 162,173,396.83/20,784.20
  6. Step 6: Final answer
    x = 7,802.72

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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.