Home / 28,161,838.96-38,856,676.80-15,938,695.60

Finding the Fourth Proportional to 28,161,838.96, 38,856,676.80 and 15,938,695.60

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Solution

The fourth proportional to 28,161,838.96, 38,856,676.80 and 15,938,695.60 is: 21,991,630.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161,838.96 : 38,856,676.80 = 15,938,695.60 : x
  2. Step 2: Convert to fraction form
    28,161,838.96/38,856,676.80 = 15,938,695.60/x
  3. Step 3: Cross multiply
    28,161,838.96x = 38,856,676.80 × 15,938,695.60
  4. Step 4: Simplify right side
    28,161,838.96x = 619,324,743,542,782
  5. Step 5: Solve for x
    x = 619,324,743,542,782/28,161,838.96
  6. Step 6: Final answer
    x = 21,991,630.04

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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.