Home / 39,408.70-54,383.25-21,503.26

Finding the Fourth Proportional to 39,408.70, 54,383.25 and 21,503.26

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Solution

The fourth proportional to 39,408.70, 54,383.25 and 21,503.26 is: 29,674.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.70 : 54,383.25 = 21,503.26 : x
  2. Step 2: Convert to fraction form
    39,408.70/54,383.25 = 21,503.26/x
  3. Step 3: Cross multiply
    39,408.70x = 54,383.25 × 21,503.26
  4. Step 4: Simplify right side
    39,408.70x = 1,169,417,164.40
  5. Step 5: Solve for x
    x = 1,169,417,164.40/39,408.70
  6. Step 6: Final answer
    x = 29,674.09

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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.