Home / 21,905.74-30,232.29-13,413.58

Finding the Fourth Proportional to 21,905.74, 30,232.29 and 13,413.58

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Solution

The fourth proportional to 21,905.74, 30,232.29 and 13,413.58 is: 18,512.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.74 : 30,232.29 = 13,413.58 : x
  2. Step 2: Convert to fraction form
    21,905.74/30,232.29 = 13,413.58/x
  3. Step 3: Cross multiply
    21,905.74x = 30,232.29 × 13,413.58
  4. Step 4: Simplify right side
    21,905.74x = 405,523,240.50
  5. Step 5: Solve for x
    x = 405,523,240.50/21,905.74
  6. Step 6: Final answer
    x = 18,512.19

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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.