Home / 20,872,889.72-31,310,318.73-17,222,849.59

Finding the Fourth Proportional to 20,872,889.72, 31,310,318.73 and 17,222,849.59

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Solution

The fourth proportional to 20,872,889.72, 31,310,318.73 and 17,222,849.59 is: 25,835,086.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872,889.72 : 31,310,318.73 = 17,222,849.59 : x
  2. Step 2: Convert to fraction form
    20,872,889.72/31,310,318.73 = 17,222,849.59/x
  3. Step 3: Cross multiply
    20,872,889.72x = 31,310,318.73 × 17,222,849.59
  4. Step 4: Simplify right side
    20,872,889.72x = 539,252,910,101,749.81
  5. Step 5: Solve for x
    x = 539,252,910,101,749.81/20,872,889.72
  6. Step 6: Final answer
    x = 25,835,086.44

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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.