Home / 13,575.20-18,735.32-8,270.02

Finding the Fourth Proportional to 13,575.20, 18,735.32 and 8,270.02

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Solution

The fourth proportional to 13,575.20, 18,735.32 and 8,270.02 is: 11,413.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.20 : 18,735.32 = 8,270.02 : x
  2. Step 2: Convert to fraction form
    13,575.20/18,735.32 = 8,270.02/x
  3. Step 3: Cross multiply
    13,575.20x = 18,735.32 × 8,270.02
  4. Step 4: Simplify right side
    13,575.20x = 154,941,471.11
  5. Step 5: Solve for x
    x = 154,941,471.11/13,575.20
  6. Step 6: Final answer
    x = 11,413.57

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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.