Finding the Fourth Proportional to 13,378,990.80, 18,462,697.44 and 7,796,881.44
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Solution
The fourth proportional to 13,378,990.80, 18,462,697.44 and 7,796,881.44 is: 10,759,515.81
Step by Step Solution
- Step 1: Write the proportion equation
13,378,990.80 : 18,462,697.44 = 7,796,881.44 : x - Step 2: Convert to fraction form
13,378,990.80/18,462,697.44 = 7,796,881.44/x - Step 3: Cross multiply
13,378,990.80x = 18,462,697.44 × 7,796,881.44 - Step 4: Simplify right side
13,378,990.80x = 143,951,463,002,271.53 - Step 5: Solve for x
x = 143,951,463,002,271.53/13,378,990.80 - Step 6: Final answer
x = 10,759,515.81
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1.5x scale
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.