Home / 39,408.30-54,383.61-21,503.68

Finding the Fourth Proportional to 39,408.30, 54,383.61 and 21,503.68

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Solution

The fourth proportional to 39,408.30, 54,383.61 and 21,503.68 is: 29,675.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.30 : 54,383.61 = 21,503.68 : x
  2. Step 2: Convert to fraction form
    39,408.30/54,383.61 = 21,503.68/x
  3. Step 3: Cross multiply
    39,408.30x = 54,383.61 × 21,503.68
  4. Step 4: Simplify right side
    39,408.30x = 1,169,447,421.01
  5. Step 5: Solve for x
    x = 1,169,447,421.01/39,408.30
  6. Step 6: Final answer
    x = 29,675.16

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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.