Finding the Fourth Proportional to 21,507,516.61, 29,691,342.12 and 14,574,818.95
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Solution
The fourth proportional to 21,507,516.61, 29,691,342.12 and 14,574,818.95 is: 20,120,683.56
Step by Step Solution
- Step 1: Write the proportion equation
21,507,516.61 : 29,691,342.12 = 14,574,818.95 : x - Step 2: Convert to fraction form
21,507,516.61/29,691,342.12 = 14,574,818.95/x - Step 3: Cross multiply
21,507,516.61x = 29,691,342.12 × 14,574,818.95 - Step 4: Simplify right side
21,507,516.61x = 432,745,935,781,509.19 - Step 5: Solve for x
x = 432,745,935,781,509.19/21,507,516.61 - Step 6: Final answer
x = 20,120,683.56
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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.