Finding the Fourth Proportional to 28,547,346.11, 39,394,282.28 and 15,494,325.62
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Solution
The fourth proportional to 28,547,346.11, 39,394,282.28 and 15,494,325.62 is: 21,381,596.55
Step by Step Solution
- Step 1: Write the proportion equation
28,547,346.11 : 39,394,282.28 = 15,494,325.62 : x - Step 2: Convert to fraction form
28,547,346.11/39,394,282.28 = 15,494,325.62/x - Step 3: Cross multiply
28,547,346.11x = 39,394,282.28 × 15,494,325.62 - Step 4: Simplify right side
28,547,346.11x = 610,387,836,938,073 - Step 5: Solve for x
x = 610,387,836,938,073/28,547,346.11 - Step 6: Final answer
x = 21,381,596.55
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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.