Finding the Fourth Proportional to 12,688,303.42, 17,509,405.66 and 7,181,560.05
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Solution
The fourth proportional to 12,688,303.42, 17,509,405.66 and 7,181,560.05 is: 9,910,296.44
Step by Step Solution
- Step 1: Write the proportion equation
12,688,303.42 : 17,509,405.66 = 7,181,560.05 : x - Step 2: Convert to fraction form
12,688,303.42/17,509,405.66 = 7,181,560.05/x - Step 3: Cross multiply
12,688,303.42x = 17,509,405.66 × 7,181,560.05 - Step 4: Simplify right side
12,688,303.42x = 125,744,848,187,099.88 - Step 5: Solve for x
x = 125,744,848,187,099.88/12,688,303.42 - Step 6: Final answer
x = 9,910,296.44
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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.