Home / 13,465.49-18,584.60-7,802.78

Finding the Fourth Proportional to 13,465.49, 18,584.60 and 7,802.78

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Solution

The fourth proportional to 13,465.49, 18,584.60 and 7,802.78 is: 10,769.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.49 : 18,584.60 = 7,802.78 : x
  2. Step 2: Convert to fraction form
    13,465.49/18,584.60 = 7,802.78/x
  3. Step 3: Cross multiply
    13,465.49x = 18,584.60 × 7,802.78
  4. Step 4: Simplify right side
    13,465.49x = 145,011,413.25
  5. Step 5: Solve for x
    x = 145,011,413.25/13,465.49
  6. Step 6: Final answer
    x = 10,769.12

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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.