Home / 15,694.32-21,657.86-8,620.60

Finding the Fourth Proportional to 15,694.32, 21,657.86 and 8,620.60

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Solution

The fourth proportional to 15,694.32, 21,657.86 and 8,620.60 is: 11,896.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,694.32 : 21,657.86 = 8,620.60 : x
  2. Step 2: Convert to fraction form
    15,694.32/21,657.86 = 8,620.60/x
  3. Step 3: Cross multiply
    15,694.32x = 21,657.86 × 8,620.60
  4. Step 4: Simplify right side
    15,694.32x = 186,703,747.92
  5. Step 5: Solve for x
    x = 186,703,747.92/15,694.32
  6. Step 6: Final answer
    x = 11,896.26

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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.