Finding the Fourth Proportional to 21,719,534.99, 29,978,178.45 and 12,432,488.63
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Solution
The fourth proportional to 21,719,534.99, 29,978,178.45 and 12,432,488.63 is: 17,159,822.39
Step by Step Solution
- Step 1: Write the proportion equation
21,719,534.99 : 29,978,178.45 = 12,432,488.63 : x - Step 2: Convert to fraction form
21,719,534.99/29,978,178.45 = 12,432,488.63/x - Step 3: Cross multiply
21,719,534.99x = 29,978,178.45 × 12,432,488.63 - Step 4: Simplify right side
21,719,534.99x = 372,703,362,727,736.06 - Step 5: Solve for x
x = 372,703,362,727,736.06/21,719,534.99 - Step 6: Final answer
x = 17,159,822.39
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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.