Finding the Fourth Proportional to 19,886,266.88, 27,439,886.40 and 11,182,758.72
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Solution
The fourth proportional to 19,886,266.88, 27,439,886.40 and 11,182,758.72 is: 15,430,428.99
Step by Step Solution
- Step 1: Write the proportion equation
19,886,266.88 : 27,439,886.40 = 11,182,758.72 : x - Step 2: Convert to fraction form
19,886,266.88/27,439,886.40 = 11,182,758.72/x - Step 3: Cross multiply
19,886,266.88x = 27,439,886.40 × 11,182,758.72 - Step 4: Simplify right side
19,886,266.88x = 306,853,628,915,409.44 - Step 5: Solve for x
x = 306,853,628,915,409.44/19,886,266.88 - Step 6: Final answer
x = 15,430,428.99
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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.