Finding the Fourth Proportional to 21,513,511.16, 29,688,651.60 and 11,723,958.08
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Solution
The fourth proportional to 21,513,511.16, 29,688,651.60 and 11,723,958.08 is: 16,179,065.53
Step by Step Solution
- Step 1: Write the proportion equation
21,513,511.16 : 29,688,651.60 = 11,723,958.08 : x - Step 2: Convert to fraction form
21,513,511.16/29,688,651.60 = 11,723,958.08/x - Step 3: Cross multiply
21,513,511.16x = 29,688,651.60 × 11,723,958.08 - Step 4: Simplify right side
21,513,511.16x = 348,068,506,810,124.94 - Step 5: Solve for x
x = 348,068,506,810,124.94/21,513,511.16 - Step 6: Final answer
x = 16,179,065.53
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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.