Finding the Fourth Proportional to 11,220,871.82, 15,481,157.20 and 6,865,417.58
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Solution
The fourth proportional to 11,220,871.82, 15,481,157.20 and 6,865,417.58 is: 9,472,045.53
Step by Step Solution
- Step 1: Write the proportion equation
11,220,871.82 : 15,481,157.20 = 6,865,417.58 : x - Step 2: Convert to fraction form
11,220,871.82/15,481,157.20 = 6,865,417.58/x - Step 3: Cross multiply
11,220,871.82x = 15,481,157.20 × 6,865,417.58 - Step 4: Simplify right side
11,220,871.82x = 106,284,608,705,054.25 - Step 5: Solve for x
x = 106,284,608,705,054.25/11,220,871.82 - Step 6: Final answer
x = 9,472,045.53
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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.