Finding the Fourth Proportional to 15,887,292.08, 21,923,808.12 and 8,643,976.88
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Solution
The fourth proportional to 15,887,292.08, 21,923,808.12 and 8,643,976.88 is: 11,928,331.75
Step by Step Solution
- Step 1: Write the proportion equation
15,887,292.08 : 21,923,808.12 = 8,643,976.88 : x - Step 2: Convert to fraction form
15,887,292.08/21,923,808.12 = 8,643,976.88/x - Step 3: Cross multiply
15,887,292.08x = 21,923,808.12 × 8,643,976.88 - Step 4: Simplify right side
15,887,292.08x = 189,508,890,510,836.28 - Step 5: Solve for x
x = 189,508,890,510,836.28/15,887,292.08 - Step 6: Final answer
x = 11,928,331.75
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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.