Home / 39,408.60-54,381.87-21,503.46

Finding the Fourth Proportional to 39,408.60, 54,381.87 and 21,503.46

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Solution

The fourth proportional to 39,408.60, 54,381.87 and 21,503.46 is: 29,673.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.60 : 54,381.87 = 21,503.46 : x
  2. Step 2: Convert to fraction form
    39,408.60/54,381.87 = 21,503.46/x
  3. Step 3: Cross multiply
    39,408.60x = 54,381.87 × 21,503.46
  4. Step 4: Simplify right side
    39,408.60x = 1,169,398,366.27
  5. Step 5: Solve for x
    x = 1,169,398,366.27/39,408.60
  6. Step 6: Final answer
    x = 29,673.68

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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.