Home / 39,408.30-54,383.00-21,503.60

Finding the Fourth Proportional to 39,408.30, 54,383.00 and 21,503.60

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Solution

The fourth proportional to 39,408.30, 54,383.00 and 21,503.60 is: 29,674.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.30 : 54,383.00 = 21,503.60 : x
  2. Step 2: Convert to fraction form
    39,408.30/54,383.00 = 21,503.60/x
  3. Step 3: Cross multiply
    39,408.30x = 54,383.00 × 21,503.60
  4. Step 4: Simplify right side
    39,408.30x = 1,169,430,316.73
  5. Step 5: Solve for x
    x = 1,169,430,316.73/39,408.30
  6. Step 6: Final answer
    x = 29,674.72

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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.