Home / 20,390,550.56-28,124,633.60-13,419,006.92

Finding the Fourth Proportional to 20,390,550.56, 28,124,633.60 and 13,419,006.92

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Solution

The fourth proportional to 20,390,550.56, 28,124,633.60 and 13,419,006.92 is: 18,508,801.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,550.56 : 28,124,633.60 = 13,419,006.92 : x
  2. Step 2: Convert to fraction form
    20,390,550.56/28,124,633.60 = 13,419,006.92/x
  3. Step 3: Cross multiply
    20,390,550.56x = 28,124,633.60 × 13,419,006.92
  4. Step 4: Simplify right side
    20,390,550.56x = 377,404,652,900,864.50
  5. Step 5: Solve for x
    x = 377,404,652,900,864.50/20,390,550.56
  6. Step 6: Final answer
    x = 18,508,801.51

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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.