Home / 39,408.48-54,382.64-21,503.49

Finding the Fourth Proportional to 39,408.48, 54,382.64 and 21,503.49

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Solution

The fourth proportional to 39,408.48, 54,382.64 and 21,503.49 is: 29,674.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.48 : 54,382.64 = 21,503.49 : x
  2. Step 2: Convert to fraction form
    39,408.48/54,382.64 = 21,503.49/x
  3. Step 3: Cross multiply
    39,408.48x = 54,382.64 × 21,503.49
  4. Step 4: Simplify right side
    39,408.48x = 1,169,416,447.90
  5. Step 5: Solve for x
    x = 1,169,416,447.90/39,408.48
  6. Step 6: Final answer
    x = 29,674.23

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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.