Home / 28,495.09-42,751.28-13,699.81

Finding the Fourth Proportional to 28,495.09, 42,751.28 and 13,699.81

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Solution

The fourth proportional to 28,495.09, 42,751.28 and 13,699.81 is: 20,553.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.09 : 42,751.28 = 13,699.81 : x
  2. Step 2: Convert to fraction form
    28,495.09/42,751.28 = 13,699.81/x
  3. Step 3: Cross multiply
    28,495.09x = 42,751.28 × 13,699.81
  4. Step 4: Simplify right side
    28,495.09x = 585,684,413.26
  5. Step 5: Solve for x
    x = 585,684,413.26/28,495.09
  6. Step 6: Final answer
    x = 20,553.87

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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.