Home / 20,466,665.72-28,256,745.22-13,028,524.60

Finding the Fourth Proportional to 20,466,665.72, 28,256,745.22 and 13,028,524.60

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Solution

The fourth proportional to 20,466,665.72, 28,256,745.22 and 13,028,524.60 is: 17,987,478.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466,665.72 : 28,256,745.22 = 13,028,524.60 : x
  2. Step 2: Convert to fraction form
    20,466,665.72/28,256,745.22 = 13,028,524.60/x
  3. Step 3: Cross multiply
    20,466,665.72x = 28,256,745.22 × 13,028,524.60
  4. Step 4: Simplify right side
    20,466,665.72x = 368,143,700,214,702.38
  5. Step 5: Solve for x
    x = 368,143,700,214,702.38/20,466,665.72
  6. Step 6: Final answer
    x = 17,987,478.04

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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.