Home / 20,466,664.72-28,256,743.84-13,028,523.60

Finding the Fourth Proportional to 20,466,664.72, 28,256,743.84 and 13,028,523.60

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Solution

The fourth proportional to 20,466,664.72, 28,256,743.84 and 13,028,523.60 is: 17,987,476.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466,664.72 : 28,256,743.84 = 13,028,523.60 : x
  2. Step 2: Convert to fraction form
    20,466,664.72/28,256,743.84 = 13,028,523.60/x
  3. Step 3: Cross multiply
    20,466,664.72x = 28,256,743.84 × 13,028,523.60
  4. Step 4: Simplify right side
    20,466,664.72x = 368,143,653,838,012.44
  5. Step 5: Solve for x
    x = 368,143,653,838,012.44/20,466,664.72
  6. Step 6: Final answer
    x = 17,987,476.65

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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.