Finding the Fourth Proportional to 21,362,420.98, 29,497,036.80 and 19,730,175.40
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Solution
The fourth proportional to 21,362,420.98, 29,497,036.80 and 19,730,175.40 is: 27,243,246.93
Step by Step Solution
- Step 1: Write the proportion equation
21,362,420.98 : 29,497,036.80 = 19,730,175.40 : x - Step 2: Convert to fraction form
21,362,420.98/29,497,036.80 = 19,730,175.40/x - Step 3: Cross multiply
21,362,420.98x = 29,497,036.80 × 19,730,175.40 - Step 4: Simplify right side
21,362,420.98x = 581,981,709,844,254.75 - Step 5: Solve for x
x = 581,981,709,844,254.75/21,362,420.98 - Step 6: Final answer
x = 27,243,246.93
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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.