Home / 15,413.30-21,270.32-8,339.72

Finding the Fourth Proportional to 15,413.30, 21,270.32 and 8,339.72

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Solution

The fourth proportional to 15,413.30, 21,270.32 and 8,339.72 is: 11,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.30 : 21,270.32 = 8,339.72 : x
  2. Step 2: Convert to fraction form
    15,413.30/21,270.32 = 8,339.72/x
  3. Step 3: Cross multiply
    15,413.30x = 21,270.32 × 8,339.72
  4. Step 4: Simplify right side
    15,413.30x = 177,388,513.11
  5. Step 5: Solve for x
    x = 177,388,513.11/15,413.30
  6. Step 6: Final answer
    x = 11,508.80

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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.