Finding the Fourth Proportional to 20,538,230.12, 28,343,802.66 and 11,371,881.32
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Solution
The fourth proportional to 20,538,230.12, 28,343,802.66 and 11,371,881.32 is: 15,693,774.88
Step by Step Solution
- Step 1: Write the proportion equation
20,538,230.12 : 28,343,802.66 = 11,371,881.32 : x - Step 2: Convert to fraction form
20,538,230.12/28,343,802.66 = 11,371,881.32/x - Step 3: Cross multiply
20,538,230.12x = 28,343,802.66 × 11,371,881.32 - Step 4: Simplify right side
20,538,230.12x = 322,322,360,007,020.31 - Step 5: Solve for x
x = 322,322,360,007,020.31/20,538,230.12 - Step 6: Final answer
x = 15,693,774.88
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.