Finding the Fourth Proportional to 10,938,518.40, 15,095,528.64 and 6,866,382.72
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Solution
The fourth proportional to 10,938,518.40, 15,095,528.64 and 6,866,382.72 is: 9,475,842.45
Step by Step Solution
- Step 1: Write the proportion equation
10,938,518.40 : 15,095,528.64 = 6,866,382.72 : x - Step 2: Convert to fraction form
10,938,518.40/15,095,528.64 = 6,866,382.72/x - Step 3: Cross multiply
10,938,518.40x = 15,095,528.64 × 6,866,382.72 - Step 4: Simplify right side
10,938,518.40x = 103,651,677,002,961.09 - Step 5: Solve for x
x = 103,651,677,002,961.09/10,938,518.40 - Step 6: Final answer
x = 9,475,842.45
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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.