Home / 21,449,742.40-32,155,951.20-12,921,025.60

Finding the Fourth Proportional to 21,449,742.40, 32,155,951.20 and 12,921,025.60

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Solution

The fourth proportional to 21,449,742.40, 32,155,951.20 and 12,921,025.60 is: 19,370,296.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,449,742.40 : 32,155,951.20 = 12,921,025.60 : x
  2. Step 2: Convert to fraction form
    21,449,742.40/32,155,951.20 = 12,921,025.60/x
  3. Step 3: Cross multiply
    21,449,742.40x = 32,155,951.20 × 12,921,025.60
  4. Step 4: Simplify right side
    21,449,742.40x = 415,487,868,647,550.69
  5. Step 5: Solve for x
    x = 415,487,868,647,550.69/21,449,742.40
  6. Step 6: Final answer
    x = 19,370,296.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.