Finding the Fourth Proportional to 13,209,090.56, 18,211,670.16 and 8,554,651.28
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Solution
The fourth proportional to 13,209,090.56, 18,211,670.16 and 8,554,651.28 is: 11,794,490.07
Step by Step Solution
- Step 1: Write the proportion equation
13,209,090.56 : 18,211,670.16 = 8,554,651.28 : x - Step 2: Convert to fraction form
13,209,090.56/18,211,670.16 = 8,554,651.28/x - Step 3: Cross multiply
13,209,090.56x = 18,211,670.16 × 8,554,651.28 - Step 4: Simplify right side
13,209,090.56x = 155,794,487,445,181.78 - Step 5: Solve for x
x = 155,794,487,445,181.78/13,209,090.56 - Step 6: Final answer
x = 11,794,490.07
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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.