Finding the Fourth Proportional to 20,292,445.92, 30,435,869.52 and 11,211,322.08
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Solution
The fourth proportional to 20,292,445.92, 30,435,869.52 and 11,211,322.08 is: 16,815,436.51
Step by Step Solution
- Step 1: Write the proportion equation
20,292,445.92 : 30,435,869.52 = 11,211,322.08 : x - Step 2: Convert to fraction form
20,292,445.92/30,435,869.52 = 11,211,322.08/x - Step 3: Cross multiply
20,292,445.92x = 30,435,869.52 × 11,211,322.08 - Step 4: Simplify right side
20,292,445.92x = 341,226,335,973,575 - Step 5: Solve for x
x = 341,226,335,973,575/20,292,445.92 - Step 6: Final answer
x = 16,815,436.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.