Home / 39,645.60-54,708.21-21,736.89

Finding the Fourth Proportional to 39,645.60, 54,708.21 and 21,736.89

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Solution

The fourth proportional to 39,645.60, 54,708.21 and 21,736.89 is: 29,995.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,645.60 : 54,708.21 = 21,736.89 : x
  2. Step 2: Convert to fraction form
    39,645.60/54,708.21 = 21,736.89/x
  3. Step 3: Cross multiply
    39,645.60x = 54,708.21 × 21,736.89
  4. Step 4: Simplify right side
    39,645.60x = 1,189,186,342.87
  5. Step 5: Solve for x
    x = 1,189,186,342.87/39,645.60
  6. Step 6: Final answer
    x = 29,995.42

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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.