Finding the Fourth Proportional to 21,735,985.68, 29,995,725.84 and 11,947,433.04
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Solution
The fourth proportional to 21,735,985.68, 29,995,725.84 and 11,947,433.04 is: 16,487,493.65
Step by Step Solution
- Step 1: Write the proportion equation
21,735,985.68 : 29,995,725.84 = 11,947,433.04 : x - Step 2: Convert to fraction form
21,735,985.68/29,995,725.84 = 11,947,433.04/x - Step 3: Cross multiply
21,735,985.68x = 29,995,725.84 × 11,947,433.04 - Step 4: Simplify right side
21,735,985.68x = 358,371,925,959,597.75 - Step 5: Solve for x
x = 358,371,925,959,597.75/21,735,985.68 - Step 6: Final answer
x = 16,487,493.65
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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.