Finding the Fourth Proportional to 13,558,589.04, 18,711,218.28 and 7,977,225.12
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Solution
The fourth proportional to 13,558,589.04, 18,711,218.28 and 7,977,225.12 is: 11,008,785.65
Step by Step Solution
- Step 1: Write the proportion equation
13,558,589.04 : 18,711,218.28 = 7,977,225.12 : x - Step 2: Convert to fraction form
13,558,589.04/18,711,218.28 = 7,977,225.12/x - Step 3: Cross multiply
13,558,589.04x = 18,711,218.28 × 7,977,225.12 - Step 4: Simplify right side
13,558,589.04x = 149,263,600,489,019.22 - Step 5: Solve for x
x = 149,263,600,489,019.22/13,558,589.04 - Step 6: Final answer
x = 11,008,785.65
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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.