Finding the Fourth Proportional to 28,775,707.58, 39,709,294.80 and 15,723,414.56
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Solution
The fourth proportional to 28,775,707.58, 39,709,294.80 and 15,723,414.56 is: 21,697,666.42
Step by Step Solution
- Step 1: Write the proportion equation
28,775,707.58 : 39,709,294.80 = 15,723,414.56 : x - Step 2: Convert to fraction form
28,775,707.58/39,709,294.80 = 15,723,414.56/x - Step 3: Cross multiply
28,775,707.58x = 39,709,294.80 × 15,723,414.56 - Step 4: Simplify right side
28,775,707.58x = 624,365,704,025,652.25 - Step 5: Solve for x
x = 624,365,704,025,652.25/28,775,707.58 - Step 6: Final answer
x = 21,697,666.42
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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.