Home / 20,040.57-27,664.84-11,977.07

Finding the Fourth Proportional to 20,040.57, 27,664.84 and 11,977.07

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Solution

The fourth proportional to 20,040.57, 27,664.84 and 11,977.07 is: 16,533.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,040.57 : 27,664.84 = 11,977.07 : x
  2. Step 2: Convert to fraction form
    20,040.57/27,664.84 = 11,977.07/x
  3. Step 3: Cross multiply
    20,040.57x = 27,664.84 × 11,977.07
  4. Step 4: Simplify right side
    20,040.57x = 331,343,725.22
  5. Step 5: Solve for x
    x = 331,343,725.22/20,040.57
  6. Step 6: Final answer
    x = 16,533.65

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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.