Home / 21,000,419.63-28,986,984.37-12,182,099.41

Finding the Fourth Proportional to 21,000,419.63, 28,986,984.37 and 12,182,099.41

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Solution

The fourth proportional to 21,000,419.63, 28,986,984.37 and 12,182,099.41 is: 16,815,012.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,419.63 : 28,986,984.37 = 12,182,099.41 : x
  2. Step 2: Convert to fraction form
    21,000,419.63/28,986,984.37 = 12,182,099.41/x
  3. Step 3: Cross multiply
    21,000,419.63x = 28,986,984.37 × 12,182,099.41
  4. Step 4: Simplify right side
    21,000,419.63x = 353,122,325,191,456.25
  5. Step 5: Solve for x
    x = 353,122,325,191,456.25/21,000,419.63
  6. Step 6: Final answer
    x = 16,815,012.81

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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.