Finding the Fourth Proportional to 19,819,938.70, 29,721,050.70 and 7,685,369.20
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Solution
The fourth proportional to 19,819,938.70, 29,721,050.70 and 7,685,369.20 is: 11,524,619.28
Step by Step Solution
- Step 1: Write the proportion equation
19,819,938.70 : 29,721,050.70 = 7,685,369.20 : x - Step 2: Convert to fraction form
19,819,938.70/29,721,050.70 = 7,685,369.20/x - Step 3: Cross multiply
19,819,938.70x = 29,721,050.70 × 7,685,369.20 - Step 4: Simplify right side
19,819,938.70x = 228,417,247,641,418.44 - Step 5: Solve for x
x = 228,417,247,641,418.44/19,819,938.70 - Step 6: Final answer
x = 11,524,619.28
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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.