Home / 20,688,505.07-28,550,135.00-11,991,722.25

Finding the Fourth Proportional to 20,688,505.07, 28,550,135.00 and 11,991,722.25

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Solution

The fourth proportional to 20,688,505.07, 28,550,135.00 and 11,991,722.25 is: 16,548,575.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,505.07 : 28,550,135.00 = 11,991,722.25 : x
  2. Step 2: Convert to fraction form
    20,688,505.07/28,550,135.00 = 11,991,722.25/x
  3. Step 3: Cross multiply
    20,688,505.07x = 28,550,135.00 × 11,991,722.25
  4. Step 4: Simplify right side
    20,688,505.07x = 342,365,289,149,983.06
  5. Step 5: Solve for x
    x = 342,365,289,149,983.06/20,688,505.07
  6. Step 6: Final answer
    x = 16,548,575.55

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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.