Finding the Fourth Proportional to 15,566,154.55, 21,479,879.60 and 8,689,371.19
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Solution
The fourth proportional to 15,566,154.55, 21,479,879.60 and 8,689,371.19 is: 11,990,543.09
Step by Step Solution
- Step 1: Write the proportion equation
15,566,154.55 : 21,479,879.60 = 8,689,371.19 : x - Step 2: Convert to fraction form
15,566,154.55/21,479,879.60 = 8,689,371.19/x - Step 3: Cross multiply
15,566,154.55x = 21,479,879.60 × 8,689,371.19 - Step 4: Simplify right side
15,566,154.55x = 186,646,646,896,347.31 - Step 5: Solve for x
x = 186,646,646,896,347.31/15,566,154.55 - Step 6: Final answer
x = 11,990,543.09
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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.