Home / 28,385.94-39,134.43-19,876.62

Finding the Fourth Proportional to 28,385.94, 39,134.43 and 19,876.62

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Solution

The fourth proportional to 28,385.94, 39,134.43 and 19,876.62 is: 27,403.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.94 : 39,134.43 = 19,876.62 : x
  2. Step 2: Convert to fraction form
    28,385.94/39,134.43 = 19,876.62/x
  3. Step 3: Cross multiply
    28,385.94x = 39,134.43 × 19,876.62
  4. Step 4: Simplify right side
    28,385.94x = 777,860,194.03
  5. Step 5: Solve for x
    x = 777,860,194.03/28,385.94
  6. Step 6: Final answer
    x = 27,403.01

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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.