Home / 21,370.36-29,486.40-12,413.22

Finding the Fourth Proportional to 21,370.36, 29,486.40 and 12,413.22

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Solution

The fourth proportional to 21,370.36, 29,486.40 and 12,413.22 is: 17,127.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.36 : 29,486.40 = 12,413.22 : x
  2. Step 2: Convert to fraction form
    21,370.36/29,486.40 = 12,413.22/x
  3. Step 3: Cross multiply
    21,370.36x = 29,486.40 × 12,413.22
  4. Step 4: Simplify right side
    21,370.36x = 366,021,170.21
  5. Step 5: Solve for x
    x = 366,021,170.21/21,370.36
  6. Step 6: Final answer
    x = 17,127.52

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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.