Finding the Fourth Proportional to 15,304,648.07, 21,121,906.15 and 11,430,443.18
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Solution
The fourth proportional to 15,304,648.07, 21,121,906.15 and 11,430,443.18 is: 15,775,125.77
Step by Step Solution
- Step 1: Write the proportion equation
15,304,648.07 : 21,121,906.15 = 11,430,443.18 : x - Step 2: Convert to fraction form
15,304,648.07/21,121,906.15 = 11,430,443.18/x - Step 3: Cross multiply
15,304,648.07x = 21,121,906.15 × 11,430,443.18 - Step 4: Simplify right side
15,304,648.07x = 241,432,748,100,867.53 - Step 5: Solve for x
x = 241,432,748,100,867.53/15,304,648.07 - Step 6: Final answer
x = 15,775,125.77
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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.