Finding the Fourth Proportional to 8,991,011.20, 13,486,516.80 and 8,167,277.65
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Solution
The fourth proportional to 8,991,011.20, 13,486,516.80 and 8,167,277.65 is: 12,250,916.48
Step by Step Solution
- Step 1: Write the proportion equation
8,991,011.20 : 13,486,516.80 = 8,167,277.65 : x - Step 2: Convert to fraction form
8,991,011.20/13,486,516.80 = 8,167,277.65/x - Step 3: Cross multiply
8,991,011.20x = 13,486,516.80 × 8,167,277.65 - Step 4: Simplify right side
8,991,011.20x = 110,148,127,236,989.53 - Step 5: Solve for x
x = 110,148,127,236,989.53/8,991,011.20 - Step 6: Final answer
x = 12,250,916.48
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1.5x scale
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.