Home / 15,515.26-21,413.24-8,802.54

Finding the Fourth Proportional to 15,515.26, 21,413.24 and 8,802.54

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Solution

The fourth proportional to 15,515.26, 21,413.24 and 8,802.54 is: 12,148.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.26 : 21,413.24 = 8,802.54 : x
  2. Step 2: Convert to fraction form
    15,515.26/21,413.24 = 8,802.54/x
  3. Step 3: Cross multiply
    15,515.26x = 21,413.24 × 8,802.54
  4. Step 4: Simplify right side
    15,515.26x = 188,490,901.63
  5. Step 5: Solve for x
    x = 188,490,901.63/15,515.26
  6. Step 6: Final answer
    x = 12,148.74

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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.