Home / 13,455.05-20,182.50-6,413.72

Finding the Fourth Proportional to 13,455.05, 20,182.50 and 6,413.72

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Solution

The fourth proportional to 13,455.05, 20,182.50 and 6,413.72 is: 9,620.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.05 : 20,182.50 = 6,413.72 : x
  2. Step 2: Convert to fraction form
    13,455.05/20,182.50 = 6,413.72/x
  3. Step 3: Cross multiply
    13,455.05x = 20,182.50 × 6,413.72
  4. Step 4: Simplify right side
    13,455.05x = 129,444,802.99
  5. Step 5: Solve for x
    x = 129,444,802.99/13,455.05
  6. Step 6: Final answer
    x = 9,620.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.