Home / 28,581.84-39,436.16-16,638

Finding the Fourth Proportional to 28,581.84, 39,436.16 and 16,638

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Solution

The fourth proportional to 28,581.84, 39,436.16 and 16,638 is: 22,956.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,581.84 : 39,436.16 = 16,638 : x
  2. Step 2: Convert to fraction form
    28,581.84/39,436.16 = 16,638/x
  3. Step 3: Cross multiply
    28,581.84x = 39,436.16 × 16,638
  4. Step 4: Simplify right side
    28,581.84x = 656,138,830.08
  5. Step 5: Solve for x
    x = 656,138,830.08/28,581.84
  6. Step 6: Final answer
    x = 22,956.49

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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.