Home / 20,605,709.96-28,434,457.32-11,437,631

Finding the Fourth Proportional to 20,605,709.96, 28,434,457.32 and 11,437,631

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Solution

The fourth proportional to 20,605,709.96, 28,434,457.32 and 11,437,631 is: 15,783,141.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605,709.96 : 28,434,457.32 = 11,437,631 : x
  2. Step 2: Convert to fraction form
    20,605,709.96/28,434,457.32 = 11,437,631/x
  3. Step 3: Cross multiply
    20,605,709.96x = 28,434,457.32 × 11,437,631
  4. Step 4: Simplify right side
    20,605,709.96x = 325,222,830,511,408.94
  5. Step 5: Solve for x
    x = 325,222,830,511,408.94/20,605,709.96
  6. Step 6: Final answer
    x = 15,783,141.23

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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.