Finding the Fourth Proportional to 19,787,891.60, 29,681,837.40 and 16,386,669.20
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Solution
The fourth proportional to 19,787,891.60, 29,681,837.40 and 16,386,669.20 is: 24,580,003.80
Step by Step Solution
- Step 1: Write the proportion equation
19,787,891.60 : 29,681,837.40 = 16,386,669.20 : x - Step 2: Convert to fraction form
19,787,891.60/29,681,837.40 = 16,386,669.20/x - Step 3: Cross multiply
19,787,891.60x = 29,681,837.40 × 16,386,669.20 - Step 4: Simplify right side
19,787,891.60x = 486,386,450,721,988.06 - Step 5: Solve for x
x = 486,386,450,721,988.06/19,787,891.60 - Step 6: Final answer
x = 24,580,003.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.