Finding the Fourth Proportional to 20,781,315.60, 28,679,101.56 and 11,613,958.08
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Solution
The fourth proportional to 20,781,315.60, 28,679,101.56 and 11,613,958.08 is: 16,027,757.32
Step by Step Solution
- Step 1: Write the proportion equation
20,781,315.60 : 28,679,101.56 = 11,613,958.08 : x - Step 2: Convert to fraction form
20,781,315.60/28,679,101.56 = 11,613,958.08/x - Step 3: Cross multiply
20,781,315.60x = 28,679,101.56 × 11,613,958.08 - Step 4: Simplify right side
20,781,315.60x = 333,077,883,289,902.56 - Step 5: Solve for x
x = 333,077,883,289,902.56/20,781,315.60 - Step 6: Final answer
x = 16,027,757.32
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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.