Home / 15,516.77-21,413.54-8,801.12

Finding the Fourth Proportional to 15,516.77, 21,413.54 and 8,801.12

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Solution

The fourth proportional to 15,516.77, 21,413.54 and 8,801.12 is: 12,145.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.77 : 21,413.54 = 8,801.12 : x
  2. Step 2: Convert to fraction form
    15,516.77/21,413.54 = 8,801.12/x
  3. Step 3: Cross multiply
    15,516.77x = 21,413.54 × 8,801.12
  4. Step 4: Simplify right side
    15,516.77x = 188,463,135.16
  5. Step 5: Solve for x
    x = 188,463,135.16/15,516.77
  6. Step 6: Final answer
    x = 12,145.77

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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.