Finding the Fourth Proportional to 13,216,537.09, 18,239,975.40 and 7,711,685.47
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Solution
The fourth proportional to 13,216,537.09, 18,239,975.40 and 7,711,685.47 is: 10,642,799.42
Step by Step Solution
- Step 1: Write the proportion equation
13,216,537.09 : 18,239,975.40 = 7,711,685.47 : x - Step 2: Convert to fraction form
13,216,537.09/18,239,975.40 = 7,711,685.47/x - Step 3: Cross multiply
13,216,537.09x = 18,239,975.40 × 7,711,685.47 - Step 4: Simplify right side
13,216,537.09x = 140,660,953,265,337.42 - Step 5: Solve for x
x = 140,660,953,265,337.42/13,216,537.09 - Step 6: Final answer
x = 10,642,799.42
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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.