Home / 20,647,769.94-28,493,749.89-11,480,332.50

Finding the Fourth Proportional to 20,647,769.94, 28,493,749.89 and 11,480,332.50

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Solution

The fourth proportional to 20,647,769.94, 28,493,749.89 and 11,480,332.50 is: 15,842,762.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647,769.94 : 28,493,749.89 = 11,480,332.50 : x
  2. Step 2: Convert to fraction form
    20,647,769.94/28,493,749.89 = 11,480,332.50/x
  3. Step 3: Cross multiply
    20,647,769.94x = 28,493,749.89 × 11,480,332.50
  4. Step 4: Simplify right side
    20,647,769.94x = 327,117,722,909,038.44
  5. Step 5: Solve for x
    x = 327,117,722,909,038.44/20,647,769.94
  6. Step 6: Final answer
    x = 15,842,762.87

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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.