Home / 20,857,627.56-28,780,880.05-11,435,939.35

Finding the Fourth Proportional to 20,857,627.56, 28,780,880.05 and 11,435,939.35

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Solution

The fourth proportional to 20,857,627.56, 28,780,880.05 and 11,435,939.35 is: 15,780,145.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857,627.56 : 28,780,880.05 = 11,435,939.35 : x
  2. Step 2: Convert to fraction form
    20,857,627.56/28,780,880.05 = 11,435,939.35/x
  3. Step 3: Cross multiply
    20,857,627.56x = 28,780,880.05 × 11,435,939.35
  4. Step 4: Simplify right side
    20,857,627.56x = 329,136,398,633,767.69
  5. Step 5: Solve for x
    x = 329,136,398,633,767.69/20,857,627.56
  6. Step 6: Final answer
    x = 15,780,145.54

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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.