Finding the Fourth Proportional to 13,308,603.84, 18,365,732.55 and 7,509,272.76
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Solution
The fourth proportional to 13,308,603.84, 18,365,732.55 and 7,509,272.76 is: 10,362,716.99
Step by Step Solution
- Step 1: Write the proportion equation
13,308,603.84 : 18,365,732.55 = 7,509,272.76 : x - Step 2: Convert to fraction form
13,308,603.84/18,365,732.55 = 7,509,272.76/x - Step 3: Cross multiply
13,308,603.84x = 18,365,732.55 × 7,509,272.76 - Step 4: Simplify right side
13,308,603.84x = 137,913,295,155,160.34 - Step 5: Solve for x
x = 137,913,295,155,160.34/13,308,603.84 - Step 6: Final answer
x = 10,362,716.99
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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.