Finding the Fourth Proportional to 19,875,770.21, 27,428,397.90 and 11,173,981.52
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Solution
The fourth proportional to 19,875,770.21, 27,428,397.90 and 11,173,981.52 is: 15,420,001.74
Step by Step Solution
- Step 1: Write the proportion equation
19,875,770.21 : 27,428,397.90 = 11,173,981.52 : x - Step 2: Convert to fraction form
19,875,770.21/27,428,397.90 = 11,173,981.52/x - Step 3: Cross multiply
19,875,770.21x = 27,428,397.90 × 11,173,981.52 - Step 4: Simplify right side
19,875,770.21x = 306,484,411,284,475.38 - Step 5: Solve for x
x = 306,484,411,284,475.38/19,875,770.21 - Step 6: Final answer
x = 15,420,001.74
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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.