Finding the Fourth Proportional to 19,432,990.63, 29,129,977.90 and 6,644,749.51
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Solution
The fourth proportional to 19,432,990.63, 29,129,977.90 and 6,644,749.51 is: 9,960,453.85
Step by Step Solution
- Step 1: Write the proportion equation
19,432,990.63 : 29,129,977.90 = 6,644,749.51 : x - Step 2: Convert to fraction form
19,432,990.63/29,129,977.90 = 6,644,749.51/x - Step 3: Cross multiply
19,432,990.63x = 29,129,977.90 × 6,644,749.51 - Step 4: Simplify right side
19,432,990.63x = 193,561,406,377,335.81 - Step 5: Solve for x
x = 193,561,406,377,335.81/19,432,990.63 - Step 6: Final answer
x = 9,960,453.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.