Finding the Fourth Proportional to 19,689,521.69, 27,171,544.85 and 10,868,978.09
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Solution
The fourth proportional to 19,689,521.69, 27,171,544.85 and 10,868,978.09 is: 14,999,192.47
Step by Step Solution
- Step 1: Write the proportion equation
19,689,521.69 : 27,171,544.85 = 10,868,978.09 : x - Step 2: Convert to fraction form
19,689,521.69/27,171,544.85 = 10,868,978.09/x - Step 3: Cross multiply
19,689,521.69x = 27,171,544.85 × 10,868,978.09 - Step 4: Simplify right side
19,689,521.69x = 295,326,925,455,899.75 - Step 5: Solve for x
x = 295,326,925,455,899.75/19,689,521.69 - Step 6: Final answer
x = 14,999,192.47
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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.