Finding the Fourth Proportional to 20,140,083.76, 27,792,349.68 and 11,437,106.80
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Solution
The fourth proportional to 20,140,083.76, 27,792,349.68 and 11,437,106.80 is: 15,782,658.87
Step by Step Solution
- Step 1: Write the proportion equation
20,140,083.76 : 27,792,349.68 = 11,437,106.80 : x - Step 2: Convert to fraction form
20,140,083.76/27,792,349.68 = 11,437,106.80/x - Step 3: Cross multiply
20,140,083.76x = 27,792,349.68 × 11,437,106.80 - Step 4: Simplify right side
20,140,083.76x = 317,864,071,513,105.81 - Step 5: Solve for x
x = 317,864,071,513,105.81/20,140,083.76 - Step 6: Final answer
x = 15,782,658.87
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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.