Home / 20,697.76-31,028.28-9,004.60

Finding the Fourth Proportional to 20,697.76, 31,028.28 and 9,004.60

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Solution

The fourth proportional to 20,697.76, 31,028.28 and 9,004.60 is: 13,498.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.76 : 31,028.28 = 9,004.60 : x
  2. Step 2: Convert to fraction form
    20,697.76/31,028.28 = 9,004.60/x
  3. Step 3: Cross multiply
    20,697.76x = 31,028.28 × 9,004.60
  4. Step 4: Simplify right side
    20,697.76x = 279,397,250.09
  5. Step 5: Solve for x
    x = 279,397,250.09/20,697.76
  6. Step 6: Final answer
    x = 13,498.91

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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.