Home / 20,477.58-30,716.38-5,686.52

Finding the Fourth Proportional to 20,477.58, 30,716.38 and 5,686.52

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Solution

The fourth proportional to 20,477.58, 30,716.38 and 5,686.52 is: 8,529.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.58 : 30,716.38 = 5,686.52 : x
  2. Step 2: Convert to fraction form
    20,477.58/30,716.38 = 5,686.52/x
  3. Step 3: Cross multiply
    20,477.58x = 30,716.38 × 5,686.52
  4. Step 4: Simplify right side
    20,477.58x = 174,669,309.20
  5. Step 5: Solve for x
    x = 174,669,309.20/20,477.58
  6. Step 6: Final answer
    x = 8,529.78

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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.