Home / 20,786,901.28-28,685,961.60-11,619,538.40

Finding the Fourth Proportional to 20,786,901.28, 28,685,961.60 and 11,619,538.40

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Solution

The fourth proportional to 20,786,901.28, 28,685,961.60 and 11,619,538.40 is: 16,034,984.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,901.28 : 28,685,961.60 = 11,619,538.40 : x
  2. Step 2: Convert to fraction form
    20,786,901.28/28,685,961.60 = 11,619,538.40/x
  3. Step 3: Cross multiply
    20,786,901.28x = 28,685,961.60 × 11,619,538.40
  4. Step 4: Simplify right side
    20,786,901.28x = 333,317,632,352,125.44
  5. Step 5: Solve for x
    x = 333,317,632,352,125.44/20,786,901.28
  6. Step 6: Final answer
    x = 16,034,984.14

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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.