Finding the Fourth Proportional to 21,515,769.60, 32,230,108.80 and 13,403,846.40
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Solution
The fourth proportional to 21,515,769.60, 32,230,108.80 and 13,403,846.40 is: 20,078,641.66
Step by Step Solution
- Step 1: Write the proportion equation
21,515,769.60 : 32,230,108.80 = 13,403,846.40 : x - Step 2: Convert to fraction form
21,515,769.60/32,230,108.80 = 13,403,846.40/x - Step 3: Cross multiply
21,515,769.60x = 32,230,108.80 × 13,403,846.40 - Step 4: Simplify right side
21,515,769.60x = 432,007,427,810,488.31 - Step 5: Solve for x
x = 432,007,427,810,488.31/21,515,769.60 - Step 6: Final answer
x = 20,078,641.66
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.