Finding the Fourth Proportional to 20,536,422.48, 28,339,138.71 and 11,242,194.93
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Solution
The fourth proportional to 20,536,422.48, 28,339,138.71 and 11,242,194.93 is: 15,513,613.52
Step by Step Solution
- Step 1: Write the proportion equation
20,536,422.48 : 28,339,138.71 = 11,242,194.93 : x - Step 2: Convert to fraction form
20,536,422.48/28,339,138.71 = 11,242,194.93/x - Step 3: Cross multiply
20,536,422.48x = 28,339,138.71 × 11,242,194.93 - Step 4: Simplify right side
20,536,422.48x = 318,594,121,526,128.75 - Step 5: Solve for x
x = 318,594,121,526,128.75/20,536,422.48 - Step 6: Final answer
x = 15,513,613.52
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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.