Finding the Fourth Proportional to 11,375,781.26, 15,698,633.64 and 6,219,143.06
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Solution
The fourth proportional to 11,375,781.26, 15,698,633.64 and 6,219,143.06 is: 8,582,447.77
Step by Step Solution
- Step 1: Write the proportion equation
11,375,781.26 : 15,698,633.64 = 6,219,143.06 : x - Step 2: Convert to fraction form
11,375,781.26/15,698,633.64 = 6,219,143.06/x - Step 3: Cross multiply
11,375,781.26x = 15,698,633.64 × 6,219,143.06 - Step 4: Simplify right side
11,375,781.26x = 97,632,048,453,688.53 - Step 5: Solve for x
x = 97,632,048,453,688.53/11,375,781.26 - Step 6: Final answer
x = 8,582,447.77
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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.