Home / 39,408.73-54,382.99-21,503.73

Finding the Fourth Proportional to 39,408.73, 54,382.99 and 21,503.73

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Solution

The fourth proportional to 39,408.73, 54,382.99 and 21,503.73 is: 29,674.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.73 : 54,382.99 = 21,503.73 : x
  2. Step 2: Convert to fraction form
    39,408.73/54,382.99 = 21,503.73/x
  3. Step 3: Cross multiply
    39,408.73x = 54,382.99 × 21,503.73
  4. Step 4: Simplify right side
    39,408.73x = 1,169,437,133.55
  5. Step 5: Solve for x
    x = 1,169,437,133.55/39,408.73
  6. Step 6: Final answer
    x = 29,674.57

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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.