Home / 30,122.73-41,583.83-21,177.90

Finding the Fourth Proportional to 30,122.73, 41,583.83 and 21,177.90

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Solution

The fourth proportional to 30,122.73, 41,583.83 and 21,177.90 is: 29,235.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,122.73 : 41,583.83 = 21,177.90 : x
  2. Step 2: Convert to fraction form
    30,122.73/41,583.83 = 21,177.90/x
  3. Step 3: Cross multiply
    30,122.73x = 41,583.83 × 21,177.90
  4. Step 4: Simplify right side
    30,122.73x = 880,658,087.47
  5. Step 5: Solve for x
    x = 880,658,087.47/30,122.73
  6. Step 6: Final answer
    x = 29,235.67

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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.