Finding the Fourth Proportional to 15,188,816.36, 20,960,565.94 and 8,219,494.13
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Solution
The fourth proportional to 15,188,816.36, 20,960,565.94 and 8,219,494.13 is: 11,342,901.55
Step by Step Solution
- Step 1: Write the proportion equation
15,188,816.36 : 20,960,565.94 = 8,219,494.13 : x - Step 2: Convert to fraction form
15,188,816.36/20,960,565.94 = 8,219,494.13/x - Step 3: Cross multiply
15,188,816.36x = 20,960,565.94 × 8,219,494.13 - Step 4: Simplify right side
15,188,816.36x = 172,285,248,682,448.03 - Step 5: Solve for x
x = 172,285,248,682,448.03/15,188,816.36 - Step 6: Final answer
x = 11,342,901.55
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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.