Finding the Fourth Proportional to 20,238,090.60, 27,929,226.96 and 11,536,105.08
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Solution
The fourth proportional to 20,238,090.60, 27,929,226.96 and 11,536,105.08 is: 15,920,202.32
Step by Step Solution
- Step 1: Write the proportion equation
20,238,090.60 : 27,929,226.96 = 11,536,105.08 : x - Step 2: Convert to fraction form
20,238,090.60/27,929,226.96 = 11,536,105.08/x - Step 3: Cross multiply
20,238,090.60x = 27,929,226.96 × 11,536,105.08 - Step 4: Simplify right side
20,238,090.60x = 322,194,497,013,729 - Step 5: Solve for x
x = 322,194,497,013,729/20,238,090.60 - Step 6: Final answer
x = 15,920,202.32
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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.