Home / 21,384,132.80-32,085,415.20-12,416,350.40

Finding the Fourth Proportional to 21,384,132.80, 32,085,415.20 and 12,416,350.40

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Solution

The fourth proportional to 21,384,132.80, 32,085,415.20 and 12,416,350.40 is: 18,629,876.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384,132.80 : 32,085,415.20 = 12,416,350.40 : x
  2. Step 2: Convert to fraction form
    21,384,132.80/32,085,415.20 = 12,416,350.40/x
  3. Step 3: Cross multiply
    21,384,132.80x = 32,085,415.20 × 12,416,350.40
  4. Step 4: Simplify right side
    21,384,132.80x = 398,383,757,852,686.06
  5. Step 5: Solve for x
    x = 398,383,757,852,686.06/21,384,132.80
  6. Step 6: Final answer
    x = 18,629,876.72

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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.