Finding the Fourth Proportional to 21,214,725.32, 29,275,543.86 and 12,968,598.08
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Solution
The fourth proportional to 21,214,725.32, 29,275,543.86 and 12,968,598.08 is: 17,896,190.32
Step by Step Solution
- Step 1: Write the proportion equation
21,214,725.32 : 29,275,543.86 = 12,968,598.08 : x - Step 2: Convert to fraction form
21,214,725.32/29,275,543.86 = 12,968,598.08/x - Step 3: Cross multiply
21,214,725.32x = 29,275,543.86 × 12,968,598.08 - Step 4: Simplify right side
21,214,725.32x = 379,662,761,893,751.81 - Step 5: Solve for x
x = 379,662,761,893,751.81/21,214,725.32 - Step 6: Final answer
x = 17,896,190.32
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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.