Home / 19,847.92-27,382.32-12,778.45

Finding the Fourth Proportional to 19,847.92, 27,382.32 and 12,778.45

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Solution

The fourth proportional to 19,847.92, 27,382.32 and 12,778.45 is: 17,629.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,847.92 : 27,382.32 = 12,778.45 : x
  2. Step 2: Convert to fraction form
    19,847.92/27,382.32 = 12,778.45/x
  3. Step 3: Cross multiply
    19,847.92x = 27,382.32 × 12,778.45
  4. Step 4: Simplify right side
    19,847.92x = 349,903,607.00
  5. Step 5: Solve for x
    x = 349,903,607.00/19,847.92
  6. Step 6: Final answer
    x = 17,629.23

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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.