Finding the Fourth Proportional to 13,215,152.99, 18,236,917.78 and 7,334,789.65
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Solution
The fourth proportional to 13,215,152.99, 18,236,917.78 and 7,334,789.65 is: 10,122,013.41
Step by Step Solution
- Step 1: Write the proportion equation
13,215,152.99 : 18,236,917.78 = 7,334,789.65 : x - Step 2: Convert to fraction form
13,215,152.99/18,236,917.78 = 7,334,789.65/x - Step 3: Cross multiply
13,215,152.99x = 18,236,917.78 × 7,334,789.65 - Step 4: Simplify right side
13,215,152.99x = 133,763,955,732,332.84 - Step 5: Solve for x
x = 133,763,955,732,332.84/13,215,152.99 - Step 6: Final answer
x = 10,122,013.41
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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.