Finding the Fourth Proportional to 19,431,154.70, 29,128,069.65 and 15,110,809.10
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Solution
The fourth proportional to 19,431,154.70, 29,128,069.65 and 15,110,809.10 is: 22,651,700.67
Step by Step Solution
- Step 1: Write the proportion equation
19,431,154.70 : 29,128,069.65 = 15,110,809.10 : x - Step 2: Convert to fraction form
19,431,154.70/29,128,069.65 = 15,110,809.10/x - Step 3: Cross multiply
19,431,154.70x = 29,128,069.65 × 15,110,809.10 - Step 4: Simplify right side
19,431,154.70x = 440,148,699,932,653.81 - Step 5: Solve for x
x = 440,148,699,932,653.81/19,431,154.70 - Step 6: Final answer
x = 22,651,700.67
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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.