Finding the Fourth Proportional to 19,956,742.80, 29,935,114.20 and 18,043,555.20
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Solution
The fourth proportional to 19,956,742.80, 29,935,114.20 and 18,043,555.20 is: 27,065,332.80
Step by Step Solution
- Step 1: Write the proportion equation
19,956,742.80 : 29,935,114.20 = 18,043,555.20 : x - Step 2: Convert to fraction form
19,956,742.80/29,935,114.20 = 18,043,555.20/x - Step 3: Cross multiply
19,956,742.80x = 29,935,114.20 × 18,043,555.20 - Step 4: Simplify right side
19,956,742.80x = 540,135,885,486,003.81 - Step 5: Solve for x
x = 540,135,885,486,003.81/19,956,742.80 - Step 6: Final answer
x = 27,065,332.80
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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.