Home / 43,179.78-64,752.66-20,986.60

Finding the Fourth Proportional to 43,179.78, 64,752.66 and 20,986.60

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Solution

The fourth proportional to 43,179.78, 64,752.66 and 20,986.60 is: 31,471.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,179.78 : 64,752.66 = 20,986.60 : x
  2. Step 2: Convert to fraction form
    43,179.78/64,752.66 = 20,986.60/x
  3. Step 3: Cross multiply
    43,179.78x = 64,752.66 × 20,986.60
  4. Step 4: Simplify right side
    43,179.78x = 1,358,938,174.36
  5. Step 5: Solve for x
    x = 1,358,938,174.36/43,179.78
  6. Step 6: Final answer
    x = 31,471.63

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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.