Finding the Fourth Proportional to 15,191,970.20, 20,964,917.35 and 8,222,646.63
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Solution
The fourth proportional to 15,191,970.20, 20,964,917.35 and 8,222,646.63 is: 11,347,251.52
Step by Step Solution
- Step 1: Write the proportion equation
15,191,970.20 : 20,964,917.35 = 8,222,646.63 : x - Step 2: Convert to fraction form
15,191,970.20/20,964,917.35 = 8,222,646.63/x - Step 3: Cross multiply
15,191,970.20x = 20,964,917.35 × 8,222,646.63 - Step 4: Simplify right side
15,191,970.20x = 172,387,106,996,206.03 - Step 5: Solve for x
x = 172,387,106,996,206.03/15,191,970.20 - Step 6: Final answer
x = 11,347,251.52
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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.