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Finding the Fourth Proportional to 25,413.45, 35,071.45 and 15,339.93

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Solution

The fourth proportional to 25,413.45, 35,071.45 and 15,339.93 is: 21,169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,413.45 : 35,071.45 = 15,339.93 : x
  2. Step 2: Convert to fraction form
    25,413.45/35,071.45 = 15,339.93/x
  3. Step 3: Cross multiply
    25,413.45x = 35,071.45 × 15,339.93
  4. Step 4: Simplify right side
    25,413.45x = 537,993,425.83
  5. Step 5: Solve for x
    x = 537,993,425.83/25,413.45
  6. Step 6: Final answer
    x = 21,169.63

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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.