Finding the Fourth Proportional to 21,588,921.60, 29,772,100.68 and 14,135,461.20
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Solution
The fourth proportional to 21,588,921.60, 29,772,100.68 and 14,135,461.20 is: 19,493,441.21
Step by Step Solution
- Step 1: Write the proportion equation
21,588,921.60 : 29,772,100.68 = 14,135,461.20 : x - Step 2: Convert to fraction form
21,588,921.60/29,772,100.68 = 14,135,461.20/x - Step 3: Cross multiply
21,588,921.60x = 29,772,100.68 × 14,135,461.20 - Step 4: Simplify right side
21,588,921.60x = 420,842,374,004,633.56 - Step 5: Solve for x
x = 420,842,374,004,633.56/21,588,921.60 - Step 6: Final answer
x = 19,493,441.21
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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.