Home / 13,701.28-18,907.80-7,413.72

Finding the Fourth Proportional to 13,701.28, 18,907.80 and 7,413.72

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Solution

The fourth proportional to 13,701.28, 18,907.80 and 7,413.72 is: 10,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.28 : 18,907.80 = 7,413.72 : x
  2. Step 2: Convert to fraction form
    13,701.28/18,907.80 = 7,413.72/x
  3. Step 3: Cross multiply
    13,701.28x = 18,907.80 × 7,413.72
  4. Step 4: Simplify right side
    13,701.28x = 140,177,135.02
  5. Step 5: Solve for x
    x = 140,177,135.02/13,701.28
  6. Step 6: Final answer
    x = 10,230.95

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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.