Finding the Fourth Proportional to 28,773,811.76, 39,707,390.97 and 15,720,789.74
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Solution
The fourth proportional to 28,773,811.76, 39,707,390.97 and 15,720,789.74 is: 21,694,433.45
Step by Step Solution
- Step 1: Write the proportion equation
28,773,811.76 : 39,707,390.97 = 15,720,789.74 : x - Step 2: Convert to fraction form
28,773,811.76/39,707,390.97 = 15,720,789.74/x - Step 3: Cross multiply
28,773,811.76x = 39,707,390.97 × 15,720,789.74 - Step 4: Simplify right side
28,773,811.76x = 624,231,544,364,807.62 - Step 5: Solve for x
x = 624,231,544,364,807.62/28,773,811.76 - Step 6: Final answer
x = 21,694,433.45
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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.