Finding the Fourth Proportional to 11,421,078.32, 15,764,616.84 and 7,346,697.68
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Solution
The fourth proportional to 11,421,078.32, 15,764,616.84 and 7,346,697.68 is: 10,140,712.70
Step by Step Solution
- Step 1: Write the proportion equation
11,421,078.32 : 15,764,616.84 = 7,346,697.68 : x - Step 2: Convert to fraction form
11,421,078.32/15,764,616.84 = 7,346,697.68/x - Step 3: Cross multiply
11,421,078.32x = 15,764,616.84 × 7,346,697.68 - Step 4: Simplify right side
11,421,078.32x = 115,817,873,964,516.92 - Step 5: Solve for x
x = 115,817,873,964,516.92/11,421,078.32 - Step 6: Final answer
x = 10,140,712.70
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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.