Home / 28,577.49-39,433.68-16,638.30

Finding the Fourth Proportional to 28,577.49, 39,433.68 and 16,638.30

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Solution

The fourth proportional to 28,577.49, 39,433.68 and 16,638.30 is: 22,958.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,577.49 : 39,433.68 = 16,638.30 : x
  2. Step 2: Convert to fraction form
    28,577.49/39,433.68 = 16,638.30/x
  3. Step 3: Cross multiply
    28,577.49x = 39,433.68 × 16,638.30
  4. Step 4: Simplify right side
    28,577.49x = 656,109,397.94
  5. Step 5: Solve for x
    x = 656,109,397.94/28,577.49
  6. Step 6: Final answer
    x = 22,958.96

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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.