Finding the Fourth Proportional to 15,889,355.40, 21,926,099.64 and 8,918,686.05
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Solution
The fourth proportional to 15,889,355.40, 21,926,099.64 and 8,918,686.05 is: 12,307,107.12
Step by Step Solution
- Step 1: Write the proportion equation
15,889,355.40 : 21,926,099.64 = 8,918,686.05 : x - Step 2: Convert to fraction form
15,889,355.40/21,926,099.64 = 8,918,686.05/x - Step 3: Cross multiply
15,889,355.40x = 21,926,099.64 × 8,918,686.05 - Step 4: Simplify right side
15,889,355.40x = 195,551,998,990,178.03 - Step 5: Solve for x
x = 195,551,998,990,178.03/15,889,355.40 - Step 6: Final answer
x = 12,307,107.12
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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.