Home / 19,619.84-27,079.68-12,906.13

Finding the Fourth Proportional to 19,619.84, 27,079.68 and 12,906.13

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Solution

The fourth proportional to 19,619.84, 27,079.68 and 12,906.13 is: 17,813.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.84 : 27,079.68 = 12,906.13 : x
  2. Step 2: Convert to fraction form
    19,619.84/27,079.68 = 12,906.13/x
  3. Step 3: Cross multiply
    19,619.84x = 27,079.68 × 12,906.13
  4. Step 4: Simplify right side
    19,619.84x = 349,493,870.44
  5. Step 5: Solve for x
    x = 349,493,870.44/19,619.84
  6. Step 6: Final answer
    x = 17,813.29

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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.