Finding the Fourth Proportional to 19,643,743.80, 29,415,849.30 and 15,662,431.80
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Solution
The fourth proportional to 19,643,743.80, 29,415,849.30 and 15,662,431.80 is: 23,453,967.75
Step by Step Solution
- Step 1: Write the proportion equation
19,643,743.80 : 29,415,849.30 = 15,662,431.80 : x - Step 2: Convert to fraction form
19,643,743.80/29,415,849.30 = 15,662,431.80/x - Step 3: Cross multiply
19,643,743.80x = 29,415,849.30 × 15,662,431.80 - Step 4: Simplify right side
19,643,743.80x = 460,723,733,500,327.75 - Step 5: Solve for x
x = 460,723,733,500,327.75/19,643,743.80 - Step 6: Final answer
x = 23,453,967.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.