Finding the Fourth Proportional to 13,282,731.22, 18,330,271.42 and 7,480,970.14
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Solution
The fourth proportional to 13,282,731.22, 18,330,271.42 and 7,480,970.14 is: 10,323,796.43
Step by Step Solution
- Step 1: Write the proportion equation
13,282,731.22 : 18,330,271.42 = 7,480,970.14 : x - Step 2: Convert to fraction form
13,282,731.22/18,330,271.42 = 7,480,970.14/x - Step 3: Cross multiply
13,282,731.22x = 18,330,271.42 × 7,480,970.14 - Step 4: Simplify right side
13,282,731.22x = 137,128,213,151,115.41 - Step 5: Solve for x
x = 137,128,213,151,115.41/13,282,731.22 - Step 6: Final answer
x = 10,323,796.43
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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.