Home / 39,308.62-54,245.56-21,403.60

Finding the Fourth Proportional to 39,308.62, 54,245.56 and 21,403.60

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Solution

The fourth proportional to 39,308.62, 54,245.56 and 21,403.60 is: 29,536.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,308.62 : 54,245.56 = 21,403.60 : x
  2. Step 2: Convert to fraction form
    39,308.62/54,245.56 = 21,403.60/x
  3. Step 3: Cross multiply
    39,308.62x = 54,245.56 × 21,403.60
  4. Step 4: Simplify right side
    39,308.62x = 1,161,050,268.02
  5. Step 5: Solve for x
    x = 1,161,050,268.02/39,308.62
  6. Step 6: Final answer
    x = 29,536.79

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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.