Finding the Fourth Proportional to 20,539,938.97, 28,346,001.47 and 11,372,582.53
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Solution
The fourth proportional to 20,539,938.97, 28,346,001.47 and 11,372,582.53 is: 15,694,654.28
Step by Step Solution
- Step 1: Write the proportion equation
20,539,938.97 : 28,346,001.47 = 11,372,582.53 : x - Step 2: Convert to fraction form
20,539,938.97/28,346,001.47 = 11,372,582.53/x - Step 3: Cross multiply
20,539,938.97x = 28,346,001.47 × 11,372,582.53 - Step 4: Simplify right side
20,539,938.97x = 322,367,241,113,076.31 - Step 5: Solve for x
x = 322,367,241,113,076.31/20,539,938.97 - Step 6: Final answer
x = 15,694,654.28
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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.