Home / 39,180.86-54,069.04-21,276.56

Finding the Fourth Proportional to 39,180.86, 54,069.04 and 21,276.56

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Solution

The fourth proportional to 39,180.86, 54,069.04 and 21,276.56 is: 29,361.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,180.86 : 54,069.04 = 21,276.56 : x
  2. Step 2: Convert to fraction form
    39,180.86/54,069.04 = 21,276.56/x
  3. Step 3: Cross multiply
    39,180.86x = 54,069.04 × 21,276.56
  4. Step 4: Simplify right side
    39,180.86x = 1,150,403,173.70
  5. Step 5: Solve for x
    x = 1,150,403,173.70/39,180.86
  6. Step 6: Final answer
    x = 29,361.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.