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Finding the Fourth Proportional to 25,666.40, 38,413.20 and 25,666.40

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Solution

The fourth proportional to 25,666.40, 38,413.20 and 25,666.40 is: 38,413.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,666.40 : 38,413.20 = 25,666.40 : x
  2. Step 2: Convert to fraction form
    25,666.40/38,413.20 = 25,666.40/x
  3. Step 3: Cross multiply
    25,666.40x = 38,413.20 × 25,666.40
  4. Step 4: Simplify right side
    25,666.40x = 985,928,556.48
  5. Step 5: Solve for x
    x = 985,928,556.48/25,666.40
  6. Step 6: Final answer
    x = 38,413.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.