Home / 15,391.18-21,232.32-9,723.20

Finding the Fourth Proportional to 15,391.18, 21,232.32 and 9,723.20

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Solution

The fourth proportional to 15,391.18, 21,232.32 and 9,723.20 is: 13,413.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.18 : 21,232.32 = 9,723.20 : x
  2. Step 2: Convert to fraction form
    15,391.18/21,232.32 = 9,723.20/x
  3. Step 3: Cross multiply
    15,391.18x = 21,232.32 × 9,723.20
  4. Step 4: Simplify right side
    15,391.18x = 206,446,093.82
  5. Step 5: Solve for x
    x = 206,446,093.82/15,391.18
  6. Step 6: Final answer
    x = 13,413.27

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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.