Home / 39,429.40-54,413.86-21,525.36

Finding the Fourth Proportional to 39,429.40, 54,413.86 and 21,525.36

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Solution

The fourth proportional to 39,429.40, 54,413.86 and 21,525.36 is: 29,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,429.40 : 54,413.86 = 21,525.36 : x
  2. Step 2: Convert to fraction form
    39,429.40/54,413.86 = 21,525.36/x
  3. Step 3: Cross multiply
    39,429.40x = 54,413.86 × 21,525.36
  4. Step 4: Simplify right side
    39,429.40x = 1,171,277,925.49
  5. Step 5: Solve for x
    x = 1,171,277,925.49/39,429.40
  6. Step 6: Final answer
    x = 29,705.70

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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.