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Finding the Fourth Proportional to 28,891.84, 43,303.20 and 10,413.76

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Solution

The fourth proportional to 28,891.84, 43,303.20 and 10,413.76 is: 15,608.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891.84 : 43,303.20 = 10,413.76 : x
  2. Step 2: Convert to fraction form
    28,891.84/43,303.20 = 10,413.76/x
  3. Step 3: Cross multiply
    28,891.84x = 43,303.20 × 10,413.76
  4. Step 4: Simplify right side
    28,891.84x = 450,949,132.03
  5. Step 5: Solve for x
    x = 450,949,132.03/28,891.84
  6. Step 6: Final answer
    x = 15,608.18

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1.5x scale

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.