Finding the Fourth Proportional to 20,684,943.45, 28,544,101.29 and 11,390,696.46
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Solution
The fourth proportional to 20,684,943.45, 28,544,101.29 and 11,390,696.46 is: 15,718,543.99
Step by Step Solution
- Step 1: Write the proportion equation
20,684,943.45 : 28,544,101.29 = 11,390,696.46 : x - Step 2: Convert to fraction form
20,684,943.45/28,544,101.29 = 11,390,696.46/x - Step 3: Cross multiply
20,684,943.45x = 28,544,101.29 × 11,390,696.46 - Step 4: Simplify right side
20,684,943.45x = 325,137,193,610,209.31 - Step 5: Solve for x
x = 325,137,193,610,209.31/20,684,943.45 - Step 6: Final answer
x = 15,718,543.99
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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.