Finding the Fourth Proportional to 21,288,465.79, 29,378,094.58 and 11,498,909.93
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Solution
The fourth proportional to 21,288,465.79, 29,378,094.58 and 11,498,909.93 is: 15,868,502.07
Step by Step Solution
- Step 1: Write the proportion equation
21,288,465.79 : 29,378,094.58 = 11,498,909.93 : x - Step 2: Convert to fraction form
21,288,465.79/29,378,094.58 = 11,498,909.93/x - Step 3: Cross multiply
21,288,465.79x = 29,378,094.58 × 11,498,909.93 - Step 4: Simplify right side
21,288,465.79x = 337,816,063,490,441.12 - Step 5: Solve for x
x = 337,816,063,490,441.12/21,288,465.79 - Step 6: Final answer
x = 15,868,502.07
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.