Home / 39,313.80-54,253.40-21,408.89

Finding the Fourth Proportional to 39,313.80, 54,253.40 and 21,408.89

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Solution

The fourth proportional to 39,313.80, 54,253.40 and 21,408.89 is: 29,544.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,313.80 : 54,253.40 = 21,408.89 : x
  2. Step 2: Convert to fraction form
    39,313.80/54,253.40 = 21,408.89/x
  3. Step 3: Cross multiply
    39,313.80x = 54,253.40 × 21,408.89
  4. Step 4: Simplify right side
    39,313.80x = 1,161,504,694.41
  5. Step 5: Solve for x
    x = 1,161,504,694.41/39,313.80
  6. Step 6: Final answer
    x = 29,544.45

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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.