Finding the Fourth Proportional to 20,649,988.18, 28,497,674.10 and 11,357,950.06
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Solution
The fourth proportional to 20,649,988.18, 28,497,674.10 and 11,357,950.06 is: 15,674,350.82
Step by Step Solution
- Step 1: Write the proportion equation
20,649,988.18 : 28,497,674.10 = 11,357,950.06 : x - Step 2: Convert to fraction form
20,649,988.18/28,497,674.10 = 11,357,950.06/x - Step 3: Cross multiply
20,649,988.18x = 28,497,674.10 × 11,357,950.06 - Step 4: Simplify right side
20,649,988.18x = 323,675,159,253,955.50 - Step 5: Solve for x
x = 323,675,159,253,955.50/20,649,988.18 - Step 6: Final answer
x = 15,674,350.82
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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.