Home / 21,254,720.80-31,882,081.20-8,477,197.60

Finding the Fourth Proportional to 21,254,720.80, 31,882,081.20 and 8,477,197.60

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Solution

The fourth proportional to 21,254,720.80, 31,882,081.20 and 8,477,197.60 is: 12,715,796.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254,720.80 : 31,882,081.20 = 8,477,197.60 : x
  2. Step 2: Convert to fraction form
    21,254,720.80/31,882,081.20 = 8,477,197.60/x
  3. Step 3: Cross multiply
    21,254,720.80x = 31,882,081.20 × 8,477,197.60
  4. Step 4: Simplify right side
    21,254,720.80x = 270,270,702,231,645.09
  5. Step 5: Solve for x
    x = 270,270,702,231,645.09/21,254,720.80
  6. Step 6: Final answer
    x = 12,715,796.40

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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.