Home / 21,936.08-30,266.96-12,977.44

Finding the Fourth Proportional to 21,936.08, 30,266.96 and 12,977.44

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Solution

The fourth proportional to 21,936.08, 30,266.96 and 12,977.44 is: 17,906.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.08 : 30,266.96 = 12,977.44 : x
  2. Step 2: Convert to fraction form
    21,936.08/30,266.96 = 12,977.44/x
  3. Step 3: Cross multiply
    21,936.08x = 30,266.96 × 12,977.44
  4. Step 4: Simplify right side
    21,936.08x = 392,787,657.38
  5. Step 5: Solve for x
    x = 392,787,657.38/21,936.08
  6. Step 6: Final answer
    x = 17,906.01

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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.