Home / 20,973.12-28,936.40-11,896.99

Finding the Fourth Proportional to 20,973.12, 28,936.40 and 11,896.99

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Solution

The fourth proportional to 20,973.12, 28,936.40 and 11,896.99 is: 16,414.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.12 : 28,936.40 = 11,896.99 : x
  2. Step 2: Convert to fraction form
    20,973.12/28,936.40 = 11,896.99/x
  3. Step 3: Cross multiply
    20,973.12x = 28,936.40 × 11,896.99
  4. Step 4: Simplify right side
    20,973.12x = 344,255,983.87
  5. Step 5: Solve for x
    x = 344,255,983.87/20,973.12
  6. Step 6: Final answer
    x = 16,414.15

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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.