Home / 21,325.25-29,428.85-11,893.61

Finding the Fourth Proportional to 21,325.25, 29,428.85 and 11,893.61

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Solution

The fourth proportional to 21,325.25, 29,428.85 and 11,893.61 is: 16,413.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.25 : 29,428.85 = 11,893.61 : x
  2. Step 2: Convert to fraction form
    21,325.25/29,428.85 = 11,893.61/x
  3. Step 3: Cross multiply
    21,325.25x = 29,428.85 × 11,893.61
  4. Step 4: Simplify right side
    21,325.25x = 350,015,264.65
  5. Step 5: Solve for x
    x = 350,015,264.65/21,325.25
  6. Step 6: Final answer
    x = 16,413.18

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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.