Home / 21,785.39-32,653.25-9,912.71

Finding the Fourth Proportional to 21,785.39, 32,653.25 and 9,912.71

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Solution

The fourth proportional to 21,785.39, 32,653.25 and 9,912.71 is: 14,857.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.39 : 32,653.25 = 9,912.71 : x
  2. Step 2: Convert to fraction form
    21,785.39/32,653.25 = 9,912.71/x
  3. Step 3: Cross multiply
    21,785.39x = 32,653.25 × 9,912.71
  4. Step 4: Simplify right side
    21,785.39x = 323,681,984.98
  5. Step 5: Solve for x
    x = 323,681,984.98/21,785.39
  6. Step 6: Final answer
    x = 14,857.76

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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.