Finding the Fourth Proportional to 20,928,494.72, 28,881,658.62 and 11,509,657.99
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Solution
The fourth proportional to 20,928,494.72, 28,881,658.62 and 11,509,657.99 is: 15,883,512.75
Step by Step Solution
- Step 1: Write the proportion equation
20,928,494.72 : 28,881,658.62 = 11,509,657.99 : x - Step 2: Convert to fraction form
20,928,494.72/28,881,658.62 = 11,509,657.99/x - Step 3: Cross multiply
20,928,494.72x = 28,881,658.62 × 11,509,657.99 - Step 4: Simplify right side
20,928,494.72x = 332,418,012,755,727.06 - Step 5: Solve for x
x = 332,418,012,755,727.06/20,928,494.72 - Step 6: Final answer
x = 15,883,512.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.