Finding the Fourth Proportional to 13,290,243.13, 18,340,542.87 and 7,178,671.63
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Solution
The fourth proportional to 13,290,243.13, 18,340,542.87 and 7,178,671.63 is: 9,906,570.82
Step by Step Solution
- Step 1: Write the proportion equation
13,290,243.13 : 18,340,542.87 = 7,178,671.63 : x - Step 2: Convert to fraction form
13,290,243.13/18,340,542.87 = 7,178,671.63/x - Step 3: Cross multiply
13,290,243.13x = 18,340,542.87 × 7,178,671.63 - Step 4: Simplify right side
13,290,243.13x = 131,660,734,687,965.08 - Step 5: Solve for x
x = 131,660,734,687,965.08/13,290,243.13 - Step 6: Final answer
x = 9,906,570.82
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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.