Finding the Fourth Proportional to 11,220,966.18, 15,477,752.97 and 7,781,952.42
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Solution
The fourth proportional to 11,220,966.18, 15,477,752.97 and 7,781,952.42 is: 10,734,114.63
Step by Step Solution
- Step 1: Write the proportion equation
11,220,966.18 : 15,477,752.97 = 7,781,952.42 : x - Step 2: Convert to fraction form
11,220,966.18/15,477,752.97 = 7,781,952.42/x - Step 3: Cross multiply
11,220,966.18x = 15,477,752.97 × 7,781,952.42 - Step 4: Simplify right side
11,220,966.18x = 120,447,137,181,053.69 - Step 5: Solve for x
x = 120,447,137,181,053.69/11,220,966.18 - Step 6: Final answer
x = 10,734,114.63
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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.