Finding the Fourth Proportional to 10,621,699.07, 15,872,082.11 and 7,975,365.59
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Solution
The fourth proportional to 10,621,699.07, 15,872,082.11 and 7,975,365.59 is: 11,917,646.75
Step by Step Solution
- Step 1: Write the proportion equation
10,621,699.07 : 15,872,082.11 = 7,975,365.59 : x - Step 2: Convert to fraction form
10,621,699.07/15,872,082.11 = 7,975,365.59/x - Step 3: Cross multiply
10,621,699.07x = 15,872,082.11 × 7,975,365.59 - Step 4: Simplify right side
10,621,699.07x = 126,585,657,382,511.36 - Step 5: Solve for x
x = 126,585,657,382,511.36/10,621,699.07 - Step 6: Final answer
x = 11,917,646.75
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.