Finding the Fourth Proportional to 11,118,155.51, 15,343,211.30 and 6,405,946.70
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Solution
The fourth proportional to 11,118,155.51, 15,343,211.30 and 6,405,946.70 is: 8,840,296.73
Step by Step Solution
- Step 1: Write the proportion equation
11,118,155.51 : 15,343,211.30 = 6,405,946.70 : x - Step 2: Convert to fraction form
11,118,155.51/15,343,211.30 = 6,405,946.70/x - Step 3: Cross multiply
11,118,155.51x = 15,343,211.30 × 6,405,946.70 - Step 4: Simplify right side
11,118,155.51x = 98,287,793,832,995.73 - Step 5: Solve for x
x = 98,287,793,832,995.73/11,118,155.51 - Step 6: Final answer
x = 8,840,296.73
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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.