Home / 39,429.60-54,413.88-21,525

Finding the Fourth Proportional to 39,429.60, 54,413.88 and 21,525

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Solution

The fourth proportional to 39,429.60, 54,413.88 and 21,525 is: 29,705.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,429.60 : 54,413.88 = 21,525 : x
  2. Step 2: Convert to fraction form
    39,429.60/54,413.88 = 21,525/x
  3. Step 3: Cross multiply
    39,429.60x = 54,413.88 × 21,525
  4. Step 4: Simplify right side
    39,429.60x = 1,171,258,767
  5. Step 5: Solve for x
    x = 1,171,258,767/39,429.60
  6. Step 6: Final answer
    x = 29,705.06

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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.