Home / 39,409.20-54,383.94-21,503.76

Finding the Fourth Proportional to 39,409.20, 54,383.94 and 21,503.76

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Solution

The fourth proportional to 39,409.20, 54,383.94 and 21,503.76 is: 29,674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,409.20 : 54,383.94 = 21,503.76 : x
  2. Step 2: Convert to fraction form
    39,409.20/54,383.94 = 21,503.76/x
  3. Step 3: Cross multiply
    39,409.20x = 54,383.94 × 21,503.76
  4. Step 4: Simplify right side
    39,409.20x = 1,169,459,193.61
  5. Step 5: Solve for x
    x = 1,169,459,193.61/39,409.20
  6. Step 6: Final answer
    x = 29,674.78

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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.