Finding the Fourth Proportional to 21,145,007.51, 29,125,529.64 and 14,939,281.81
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Solution
The fourth proportional to 21,145,007.51, 29,125,529.64 and 14,939,281.81 is: 20,577,646.76
Step by Step Solution
- Step 1: Write the proportion equation
21,145,007.51 : 29,125,529.64 = 14,939,281.81 : x - Step 2: Convert to fraction form
21,145,007.51/29,125,529.64 = 14,939,281.81/x - Step 3: Cross multiply
21,145,007.51x = 29,125,529.64 × 14,939,281.81 - Step 4: Simplify right side
21,145,007.51x = 435,114,495,193,874.75 - Step 5: Solve for x
x = 435,114,495,193,874.75/21,145,007.51 - Step 6: Final answer
x = 20,577,646.76
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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.