Home / 21,413.98-29,554.70-12,917.33

Finding the Fourth Proportional to 21,413.98, 29,554.70 and 12,917.33

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Solution

The fourth proportional to 21,413.98, 29,554.70 and 12,917.33 is: 17,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,413.98 : 29,554.70 = 12,917.33 : x
  2. Step 2: Convert to fraction form
    21,413.98/29,554.70 = 12,917.33/x
  3. Step 3: Cross multiply
    21,413.98x = 29,554.70 × 12,917.33
  4. Step 4: Simplify right side
    21,413.98x = 381,767,814.69
  5. Step 5: Solve for x
    x = 381,767,814.69/21,413.98
  6. Step 6: Final answer
    x = 17,827.97

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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.