Finding the Fourth Proportional to 28,760,931.80, 39,690,945.36 and 15,708,806.44
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Solution
The fourth proportional to 28,760,931.80, 39,690,945.36 and 15,708,806.44 is: 21,678,622.32
Step by Step Solution
- Step 1: Write the proportion equation
28,760,931.80 : 39,690,945.36 = 15,708,806.44 : x - Step 2: Convert to fraction form
28,760,931.80/39,690,945.36 = 15,708,806.44/x - Step 3: Cross multiply
28,760,931.80x = 39,690,945.36 × 15,708,806.44 - Step 4: Simplify right side
28,760,931.80x = 623,497,378,080,856.12 - Step 5: Solve for x
x = 623,497,378,080,856.12/28,760,931.80 - Step 6: Final answer
x = 21,678,622.32
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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.