Home / 39,429.21-54,413.60-21,525.18

Finding the Fourth Proportional to 39,429.21, 54,413.60 and 21,525.18

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Solution

The fourth proportional to 39,429.21, 54,413.60 and 21,525.18 is: 29,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,429.21 : 54,413.60 = 21,525.18 : x
  2. Step 2: Convert to fraction form
    39,429.21/54,413.60 = 21,525.18/x
  3. Step 3: Cross multiply
    39,429.21x = 54,413.60 × 21,525.18
  4. Step 4: Simplify right side
    39,429.21x = 1,171,262,534.45
  5. Step 5: Solve for x
    x = 1,171,262,534.45/39,429.21
  6. Step 6: Final answer
    x = 29,705.45

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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.