Finding the Fourth Proportional to 15,474,547.45, 21,355,068.99 and 8,505,985.96
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Solution
The fourth proportional to 15,474,547.45, 21,355,068.99 and 8,505,985.96 is: 11,738,366.99
Step by Step Solution
- Step 1: Write the proportion equation
15,474,547.45 : 21,355,068.99 = 8,505,985.96 : x - Step 2: Convert to fraction form
15,474,547.45/21,355,068.99 = 8,505,985.96/x - Step 3: Cross multiply
15,474,547.45x = 21,355,068.99 × 8,505,985.96 - Step 4: Simplify right side
15,474,547.45x = 181,645,917,003,771.38 - Step 5: Solve for x
x = 181,645,917,003,771.38/15,474,547.45 - Step 6: Final answer
x = 11,738,366.99
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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.