Home / 21,317.31-29,413.40-15,362.19

Finding the Fourth Proportional to 21,317.31, 29,413.40 and 15,362.19

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Solution

The fourth proportional to 21,317.31, 29,413.40 and 15,362.19 is: 21,196.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.31 : 29,413.40 = 15,362.19 : x
  2. Step 2: Convert to fraction form
    21,317.31/29,413.40 = 15,362.19/x
  3. Step 3: Cross multiply
    21,317.31x = 29,413.40 × 15,362.19
  4. Step 4: Simplify right side
    21,317.31x = 451,854,162.54
  5. Step 5: Solve for x
    x = 451,854,162.54/21,317.31
  6. Step 6: Final answer
    x = 21,196.58

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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.