Home / 21,561,021.20-32,341,531.80-20,002,127.60

Finding the Fourth Proportional to 21,561,021.20, 32,341,531.80 and 20,002,127.60

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Solution

The fourth proportional to 21,561,021.20, 32,341,531.80 and 20,002,127.60 is: 30,003,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561,021.20 : 32,341,531.80 = 20,002,127.60 : x
  2. Step 2: Convert to fraction form
    21,561,021.20/32,341,531.80 = 20,002,127.60/x
  3. Step 3: Cross multiply
    21,561,021.20x = 32,341,531.80 × 20,002,127.60
  4. Step 4: Simplify right side
    21,561,021.20x = 646,899,445,843,057.75
  5. Step 5: Solve for x
    x = 646,899,445,843,057.75/21,561,021.20
  6. Step 6: Final answer
    x = 30,003,191.40

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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.