Finding the Fourth Proportional to 20,642,471.34, 28,487,341.62 and 11,350,749.12
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Solution
The fourth proportional to 20,642,471.34, 28,487,341.62 and 11,350,749.12 is: 15,664,435.84
Step by Step Solution
- Step 1: Write the proportion equation
20,642,471.34 : 28,487,341.62 = 11,350,749.12 : x - Step 2: Convert to fraction form
20,642,471.34/28,487,341.62 = 11,350,749.12/x - Step 3: Cross multiply
20,642,471.34x = 28,487,341.62 × 11,350,749.12 - Step 4: Simplify right side
20,642,471.34x = 323,352,667,824,354.38 - Step 5: Solve for x
x = 323,352,667,824,354.38/20,642,471.34 - Step 6: Final answer
x = 15,664,435.84
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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.