Home / 19,511.07-26,936.87-12,808.42

Finding the Fourth Proportional to 19,511.07, 26,936.87 and 12,808.42

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Solution

The fourth proportional to 19,511.07, 26,936.87 and 12,808.42 is: 17,683.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511.07 : 26,936.87 = 12,808.42 : x
  2. Step 2: Convert to fraction form
    19,511.07/26,936.87 = 12,808.42/x
  3. Step 3: Cross multiply
    19,511.07x = 26,936.87 × 12,808.42
  4. Step 4: Simplify right side
    19,511.07x = 345,018,685.11
  5. Step 5: Solve for x
    x = 345,018,685.11/19,511.07
  6. Step 6: Final answer
    x = 17,683.23

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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.