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Finding the Fourth Proportional to 28,938.51, 43,413.03 and 9,215.01

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Solution

The fourth proportional to 28,938.51, 43,413.03 and 9,215.01 is: 13,824.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,938.51 : 43,413.03 = 9,215.01 : x
  2. Step 2: Convert to fraction form
    28,938.51/43,413.03 = 9,215.01/x
  3. Step 3: Cross multiply
    28,938.51x = 43,413.03 × 9,215.01
  4. Step 4: Simplify right side
    28,938.51x = 400,051,505.58
  5. Step 5: Solve for x
    x = 400,051,505.58/28,938.51
  6. Step 6: Final answer
    x = 13,824.19

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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.