Home / 19,086.72-28,648.31-11,705.60

Finding the Fourth Proportional to 19,086.72, 28,648.31 and 11,705.60

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Solution

The fourth proportional to 19,086.72, 28,648.31 and 11,705.60 is: 17,569.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,086.72 : 28,648.31 = 11,705.60 : x
  2. Step 2: Convert to fraction form
    19,086.72/28,648.31 = 11,705.60/x
  3. Step 3: Cross multiply
    19,086.72x = 28,648.31 × 11,705.60
  4. Step 4: Simplify right side
    19,086.72x = 335,345,455.77
  5. Step 5: Solve for x
    x = 335,345,455.77/19,086.72
  6. Step 6: Final answer
    x = 17,569.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.