Finding the Fourth Proportional to 11,128,263.67, 15,390,813.15 and 9,981,925.75
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Solution
The fourth proportional to 11,128,263.67, 15,390,813.15 and 9,981,925.75 is: 13,805,384.08
Step by Step Solution
- Step 1: Write the proportion equation
11,128,263.67 : 15,390,813.15 = 9,981,925.75 : x - Step 2: Convert to fraction form
11,128,263.67/15,390,813.15 = 9,981,925.75/x - Step 3: Cross multiply
11,128,263.67x = 15,390,813.15 × 9,981,925.75 - Step 4: Simplify right side
11,128,263.67x = 153,629,954,095,423.62 - Step 5: Solve for x
x = 153,629,954,095,423.62/11,128,263.67 - Step 6: Final answer
x = 13,805,384.08
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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.