Home / 20,477.43-30,712.71-5,687.84

Finding the Fourth Proportional to 20,477.43, 30,712.71 and 5,687.84

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Solution

The fourth proportional to 20,477.43, 30,712.71 and 5,687.84 is: 8,530.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.43 : 30,712.71 = 5,687.84 : x
  2. Step 2: Convert to fraction form
    20,477.43/30,712.71 = 5,687.84/x
  3. Step 3: Cross multiply
    20,477.43x = 30,712.71 × 5,687.84
  4. Step 4: Simplify right side
    20,477.43x = 174,688,980.45
  5. Step 5: Solve for x
    x = 174,688,980.45/20,477.43
  6. Step 6: Final answer
    x = 8,530.81

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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.