Home / 28,579.59-39,440.48-16,638.57

Finding the Fourth Proportional to 28,579.59, 39,440.48 and 16,638.57

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Solution

The fourth proportional to 28,579.59, 39,440.48 and 16,638.57 is: 22,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.59 : 39,440.48 = 16,638.57 : x
  2. Step 2: Convert to fraction form
    28,579.59/39,440.48 = 16,638.57/x
  3. Step 3: Cross multiply
    28,579.59x = 39,440.48 × 16,638.57
  4. Step 4: Simplify right side
    28,579.59x = 656,233,104.12
  5. Step 5: Solve for x
    x = 656,233,104.12/28,579.59
  6. Step 6: Final answer
    x = 22,961.60

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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.