Finding the Fourth Proportional to 21,008,026.68, 28,991,048.76 and 11,350,234.68
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Solution
The fourth proportional to 21,008,026.68, 28,991,048.76 and 11,350,234.68 is: 15,663,308.70
Step by Step Solution
- Step 1: Write the proportion equation
21,008,026.68 : 28,991,048.76 = 11,350,234.68 : x - Step 2: Convert to fraction form
21,008,026.68/28,991,048.76 = 11,350,234.68/x - Step 3: Cross multiply
21,008,026.68x = 28,991,048.76 × 11,350,234.68 - Step 4: Simplify right side
21,008,026.68x = 329,055,207,045,323 - Step 5: Solve for x
x = 329,055,207,045,323/21,008,026.68 - Step 6: Final answer
x = 15,663,308.70
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1.5x scale
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.