Finding the Fourth Proportional to 13,918,621.94, 19,208,138.70 and 8,038,149.71
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Solution
The fourth proportional to 13,918,621.94, 19,208,138.70 and 8,038,149.71 is: 11,092,900.95
Step by Step Solution
- Step 1: Write the proportion equation
13,918,621.94 : 19,208,138.70 = 8,038,149.71 : x - Step 2: Convert to fraction form
13,918,621.94/19,208,138.70 = 8,038,149.71/x - Step 3: Cross multiply
13,918,621.94x = 19,208,138.70 × 8,038,149.71 - Step 4: Simplify right side
13,918,621.94x = 154,397,894,425,004.09 - Step 5: Solve for x
x = 154,397,894,425,004.09/13,918,621.94 - Step 6: Final answer
x = 11,092,900.95
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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.