Finding the Fourth Proportional to 21,701,875.87, 29,934,965.96 and 12,875,077.96
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Solution
The fourth proportional to 21,701,875.87, 29,934,965.96 and 12,875,077.96 is: 17,759,525.61
Step by Step Solution
- Step 1: Write the proportion equation
21,701,875.87 : 29,934,965.96 = 12,875,077.96 : x - Step 2: Convert to fraction form
21,701,875.87/29,934,965.96 = 12,875,077.96/x - Step 3: Cross multiply
21,701,875.87x = 29,934,965.96 × 12,875,077.96 - Step 4: Simplify right side
21,701,875.87x = 385,415,020,250,896 - Step 5: Solve for x
x = 385,415,020,250,896/21,701,875.87 - Step 6: Final answer
x = 17,759,525.61
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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.