Finding the Fourth Proportional to 15,392,353.46, 21,241,449.45 and 8,423,032.49
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Solution
The fourth proportional to 15,392,353.46, 21,241,449.45 and 8,423,032.49 is: 11,623,785.76
Step by Step Solution
- Step 1: Write the proportion equation
15,392,353.46 : 21,241,449.45 = 8,423,032.49 : x - Step 2: Convert to fraction form
15,392,353.46/21,241,449.45 = 8,423,032.49/x - Step 3: Cross multiply
15,392,353.46x = 21,241,449.45 × 8,423,032.49 - Step 4: Simplify right side
15,392,353.46x = 178,917,418,923,980 - Step 5: Solve for x
x = 178,917,418,923,980/15,392,353.46 - Step 6: Final answer
x = 11,623,785.76
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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.