Home / 30,504.74-42,083.69-20,436.44

Finding the Fourth Proportional to 30,504.74, 42,083.69 and 20,436.44

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Solution

The fourth proportional to 30,504.74, 42,083.69 and 20,436.44 is: 28,193.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,504.74 : 42,083.69 = 20,436.44 : x
  2. Step 2: Convert to fraction form
    30,504.74/42,083.69 = 20,436.44/x
  3. Step 3: Cross multiply
    30,504.74x = 42,083.69 × 20,436.44
  4. Step 4: Simplify right side
    30,504.74x = 860,040,493.06
  5. Step 5: Solve for x
    x = 860,040,493.06/30,504.74
  6. Step 6: Final answer
    x = 28,193.67

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1.5x scale

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.