Home / 30,413.54-41,970.79-16,985.30

Finding the Fourth Proportional to 30,413.54, 41,970.79 and 16,985.30

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Solution

The fourth proportional to 30,413.54, 41,970.79 and 16,985.30 is: 23,439.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,413.54 : 41,970.79 = 16,985.30 : x
  2. Step 2: Convert to fraction form
    30,413.54/41,970.79 = 16,985.30/x
  3. Step 3: Cross multiply
    30,413.54x = 41,970.79 × 16,985.30
  4. Step 4: Simplify right side
    30,413.54x = 712,886,207.07
  5. Step 5: Solve for x
    x = 712,886,207.07/30,413.54
  6. Step 6: Final answer
    x = 23,439.76

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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.