Finding the Fourth Proportional to 20,235,443.25, 27,934,031.16 and 12,903,132.09
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Solution
The fourth proportional to 20,235,443.25, 27,934,031.16 and 12,903,132.09 is: 17,812,137.32
Step by Step Solution
- Step 1: Write the proportion equation
20,235,443.25 : 27,934,031.16 = 12,903,132.09 : x - Step 2: Convert to fraction form
20,235,443.25/27,934,031.16 = 12,903,132.09/x - Step 3: Cross multiply
20,235,443.25x = 27,934,031.16 × 12,903,132.09 - Step 4: Simplify right side
20,235,443.25x = 360,436,493,863,655.94 - Step 5: Solve for x
x = 360,436,493,863,655.94/20,235,443.25 - Step 6: Final answer
x = 17,812,137.32
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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.