Home / 21,905.10-30,232.17-12,474.54

Finding the Fourth Proportional to 21,905.10, 30,232.17 and 12,474.54

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Solution

The fourth proportional to 21,905.10, 30,232.17 and 12,474.54 is: 17,216.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.10 : 30,232.17 = 12,474.54 : x
  2. Step 2: Convert to fraction form
    21,905.10/30,232.17 = 12,474.54/x
  3. Step 3: Cross multiply
    21,905.10x = 30,232.17 × 12,474.54
  4. Step 4: Simplify right side
    21,905.10x = 377,132,413.95
  5. Step 5: Solve for x
    x = 377,132,413.95/21,905.10
  6. Step 6: Final answer
    x = 17,216.65

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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.