Home / 10,300.25-15,413.45-8,918.35

Finding the Fourth Proportional to 10,300.25, 15,413.45 and 8,918.35

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Solution

The fourth proportional to 10,300.25, 15,413.45 and 8,918.35 is: 13,345.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,300.25 : 15,413.45 = 8,918.35 : x
  2. Step 2: Convert to fraction form
    10,300.25/15,413.45 = 8,918.35/x
  3. Step 3: Cross multiply
    10,300.25x = 15,413.45 × 8,918.35
  4. Step 4: Simplify right side
    10,300.25x = 137,462,458.68
  5. Step 5: Solve for x
    x = 137,462,458.68/10,300.25
  6. Step 6: Final answer
    x = 13,345.54

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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.