Finding the Fourth Proportional to 21,197,116.68, 29,258,364.47 and 12,378,946.61
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Solution
The fourth proportional to 21,197,116.68, 29,258,364.47 and 12,378,946.61 is: 17,086,650.85
Step by Step Solution
- Step 1: Write the proportion equation
21,197,116.68 : 29,258,364.47 = 12,378,946.61 : x - Step 2: Convert to fraction form
21,197,116.68/29,258,364.47 = 12,378,946.61/x - Step 3: Cross multiply
21,197,116.68x = 29,258,364.47 × 12,378,946.61 - Step 4: Simplify right side
21,197,116.68x = 362,187,731,675,676.56 - Step 5: Solve for x
x = 362,187,731,675,676.56/21,197,116.68 - Step 6: Final answer
x = 17,086,650.85
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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.