Finding the Fourth Proportional to 13,605,023.18, 18,774,932.20 and 7,493,451.68
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Solution
The fourth proportional to 13,605,023.18, 18,774,932.20 and 7,493,451.68 is: 10,340,963.43
Step by Step Solution
- Step 1: Write the proportion equation
13,605,023.18 : 18,774,932.20 = 7,493,451.68 : x - Step 2: Convert to fraction form
13,605,023.18/18,774,932.20 = 7,493,451.68/x - Step 3: Cross multiply
13,605,023.18x = 18,774,932.20 × 7,493,451.68 - Step 4: Simplify right side
13,605,023.18x = 140,689,047,235,976.08 - Step 5: Solve for x
x = 140,689,047,235,976.08/13,605,023.18 - Step 6: Final answer
x = 10,340,963.43
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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.