Finding the Fourth Proportional to 15,376,089.20, 21,219,041.26 and 8,407,216.46
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Solution
The fourth proportional to 15,376,089.20, 21,219,041.26 and 8,407,216.46 is: 11,601,979.59
Step by Step Solution
- Step 1: Write the proportion equation
15,376,089.20 : 21,219,041.26 = 8,407,216.46 : x - Step 2: Convert to fraction form
15,376,089.20/21,219,041.26 = 8,407,216.46/x - Step 3: Cross multiply
15,376,089.20x = 21,219,041.26 × 8,407,216.46 - Step 4: Simplify right side
15,376,089.20x = 178,393,073,010,047.78 - Step 5: Solve for x
x = 178,393,073,010,047.78/15,376,089.20 - Step 6: Final answer
x = 11,601,979.59
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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.