Finding the Fourth Proportional to 13,684,478.35, 18,884,630.16 and 7,405,005.71
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Solution
The fourth proportional to 13,684,478.35, 18,884,630.16 and 7,405,005.71 is: 10,218,934.95
Step by Step Solution
- Step 1: Write the proportion equation
13,684,478.35 : 18,884,630.16 = 7,405,005.71 : x - Step 2: Convert to fraction form
13,684,478.35/18,884,630.16 = 7,405,005.71/x - Step 3: Cross multiply
13,684,478.35x = 18,884,630.16 × 7,405,005.71 - Step 4: Simplify right side
13,684,478.35x = 139,840,794,034,590.05 - Step 5: Solve for x
x = 139,840,794,034,590.05/13,684,478.35 - Step 6: Final answer
x = 10,218,934.95
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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.