Finding the Fourth Proportional to 15,692,866.53, 21,656,413.69 and 8,628,756.18
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Solution
The fourth proportional to 15,692,866.53, 21,656,413.69 and 8,628,756.18 is: 11,907,825.32
Step by Step Solution
- Step 1: Write the proportion equation
15,692,866.53 : 21,656,413.69 = 8,628,756.18 : x - Step 2: Convert to fraction form
15,692,866.53/21,656,413.69 = 8,628,756.18/x - Step 3: Cross multiply
15,692,866.53x = 21,656,413.69 × 8,628,756.18 - Step 4: Simplify right side
15,692,866.53x = 186,867,913,442,652.22 - Step 5: Solve for x
x = 186,867,913,442,652.22/15,692,866.53 - Step 6: Final answer
x = 11,907,825.32
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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.