Finding the Fourth Proportional to 21,731,821.12, 29,983,372.96 and 13,026,817.44
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Solution
The fourth proportional to 21,731,821.12, 29,983,372.96 and 13,026,817.44 is: 17,973,087.65
Step by Step Solution
- Step 1: Write the proportion equation
21,731,821.12 : 29,983,372.96 = 13,026,817.44 : x - Step 2: Convert to fraction form
21,731,821.12/29,983,372.96 = 13,026,817.44/x - Step 3: Cross multiply
21,731,821.12x = 29,983,372.96 × 13,026,817.44 - Step 4: Simplify right side
21,731,821.12x = 390,587,925,785,352.44 - Step 5: Solve for x
x = 390,587,925,785,352.44/21,731,821.12 - Step 6: Final answer
x = 17,973,087.65
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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.