Home / 20,688,499.83-28,550,127.76-11,991,716.99

Finding the Fourth Proportional to 20,688,499.83, 28,550,127.76 and 11,991,716.99

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Solution

The fourth proportional to 20,688,499.83, 28,550,127.76 and 11,991,716.99 is: 16,548,568.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,499.83 : 28,550,127.76 = 11,991,716.99 : x
  2. Step 2: Convert to fraction form
    20,688,499.83/28,550,127.76 = 11,991,716.99/x
  3. Step 3: Cross multiply
    20,688,499.83x = 28,550,127.76 × 11,991,716.99
  4. Step 4: Simplify right side
    20,688,499.83x = 342,365,052,128,037.12
  5. Step 5: Solve for x
    x = 342,365,052,128,037.12/20,688,499.83
  6. Step 6: Final answer
    x = 16,548,568.29

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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.