Home / 20,646,915.78-28,493,475.50-11,355,204.23

Finding the Fourth Proportional to 20,646,915.78, 28,493,475.50 and 11,355,204.23

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Solution

The fourth proportional to 20,646,915.78, 28,493,475.50 and 11,355,204.23 is: 15,670,584.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646,915.78 : 28,493,475.50 = 11,355,204.23 : x
  2. Step 2: Convert to fraction form
    20,646,915.78/28,493,475.50 = 11,355,204.23/x
  3. Step 3: Cross multiply
    20,646,915.78x = 28,493,475.50 × 11,355,204.23
  4. Step 4: Simplify right side
    20,646,915.78x = 323,549,233,517,772.56
  5. Step 5: Solve for x
    x = 323,549,233,517,772.56/20,646,915.78
  6. Step 6: Final answer
    x = 15,670,584.26

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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.