Finding the Fourth Proportional to 21,367,356.63, 29,486,978.06 and 11,577,793.08
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Solution
The fourth proportional to 21,367,356.63, 29,486,978.06 and 11,577,793.08 is: 15,977,368.49
Step by Step Solution
- Step 1: Write the proportion equation
21,367,356.63 : 29,486,978.06 = 11,577,793.08 : x - Step 2: Convert to fraction form
21,367,356.63/29,486,978.06 = 11,577,793.08/x - Step 3: Cross multiply
21,367,356.63x = 29,486,978.06 × 11,577,793.08 - Step 4: Simplify right side
21,367,356.63x = 341,394,130,533,179.81 - Step 5: Solve for x
x = 341,394,130,533,179.81/21,367,356.63 - Step 6: Final answer
x = 15,977,368.49
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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.