Finding the Fourth Proportional to 14,128,938.62, 21,196,568.37 and 5,153,490.62
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Solution
The fourth proportional to 14,128,938.62, 21,196,568.37 and 5,153,490.62 is: 7,731,388.69
Step by Step Solution
- Step 1: Write the proportion equation
14,128,938.62 : 21,196,568.37 = 5,153,490.62 : x - Step 2: Convert to fraction form
14,128,938.62/21,196,568.37 = 5,153,490.62/x - Step 3: Cross multiply
14,128,938.62x = 21,196,568.37 × 5,153,490.62 - Step 4: Simplify right side
14,128,938.62x = 109,236,316,270,983.70 - Step 5: Solve for x
x = 109,236,316,270,983.70/14,128,938.62 - Step 6: Final answer
x = 7,731,388.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.