Home / 15,659.10-21,608.10-8,585.64

Finding the Fourth Proportional to 15,659.10, 21,608.10 and 8,585.64

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Solution

The fourth proportional to 15,659.10, 21,608.10 and 8,585.64 is: 11,847.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.10 : 21,608.10 = 8,585.64 : x
  2. Step 2: Convert to fraction form
    15,659.10/21,608.10 = 8,585.64/x
  3. Step 3: Cross multiply
    15,659.10x = 21,608.10 × 8,585.64
  4. Step 4: Simplify right side
    15,659.10x = 185,519,367.68
  5. Step 5: Solve for x
    x = 185,519,367.68/15,659.10
  6. Step 6: Final answer
    x = 11,847.38

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Half scale
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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.