Home / 20,561,865.92-28,375,035.36-11,269,364.48

Finding the Fourth Proportional to 20,561,865.92, 28,375,035.36 and 11,269,364.48

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Solution

The fourth proportional to 20,561,865.92, 28,375,035.36 and 11,269,364.48 is: 15,551,536.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561,865.92 : 28,375,035.36 = 11,269,364.48 : x
  2. Step 2: Convert to fraction form
    20,561,865.92/28,375,035.36 = 11,269,364.48/x
  3. Step 3: Cross multiply
    20,561,865.92x = 28,375,035.36 × 11,269,364.48
  4. Step 4: Simplify right side
    20,561,865.92x = 319,768,615,604,728
  5. Step 5: Solve for x
    x = 319,768,615,604,728/20,561,865.92
  6. Step 6: Final answer
    x = 15,551,536.85

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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.