Home / 21,163.28-31,717.07-11,807.70

Finding the Fourth Proportional to 21,163.28, 31,717.07 and 11,807.70

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Solution

The fourth proportional to 21,163.28, 31,717.07 and 11,807.70 is: 17,696.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.28 : 31,717.07 = 11,807.70 : x
  2. Step 2: Convert to fraction form
    21,163.28/31,717.07 = 11,807.70/x
  3. Step 3: Cross multiply
    21,163.28x = 31,717.07 × 11,807.70
  4. Step 4: Simplify right side
    21,163.28x = 374,505,588.40
  5. Step 5: Solve for x
    x = 374,505,588.40/21,163.28
  6. Step 6: Final answer
    x = 17,696.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.