Home / 13,519,428.82-20,180,799.22-12,520,319.74

Finding the Fourth Proportional to 13,519,428.82, 20,180,799.22 and 12,520,319.74

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Solution

The fourth proportional to 13,519,428.82, 20,180,799.22 and 12,520,319.74 is: 18,689,403.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519,428.82 : 20,180,799.22 = 12,520,319.74 : x
  2. Step 2: Convert to fraction form
    13,519,428.82/20,180,799.22 = 12,520,319.74/x
  3. Step 3: Cross multiply
    13,519,428.82x = 20,180,799.22 × 12,520,319.74
  4. Step 4: Simplify right side
    13,519,428.82x = 252,670,058,843,142.59
  5. Step 5: Solve for x
    x = 252,670,058,843,142.59/13,519,428.82
  6. Step 6: Final answer
    x = 18,689,403.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.