Home / 20,653.09-30,984.39-7,325.38

Finding the Fourth Proportional to 20,653.09, 30,984.39 and 7,325.38

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Solution

The fourth proportional to 20,653.09, 30,984.39 and 7,325.38 is: 10,989.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.09 : 30,984.39 = 7,325.38 : x
  2. Step 2: Convert to fraction form
    20,653.09/30,984.39 = 7,325.38/x
  3. Step 3: Cross multiply
    20,653.09x = 30,984.39 × 7,325.38
  4. Step 4: Simplify right side
    20,653.09x = 226,972,430.82
  5. Step 5: Solve for x
    x = 226,972,430.82/20,653.09
  6. Step 6: Final answer
    x = 10,989.76

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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.