Finding the Fourth Proportional to 13,136,749.28, 18,128,350.28 and 7,256,278.08
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Solution
The fourth proportional to 13,136,749.28, 18,128,350.28 and 7,256,278.08 is: 10,013,462.84
Step by Step Solution
- Step 1: Write the proportion equation
13,136,749.28 : 18,128,350.28 = 7,256,278.08 : x - Step 2: Convert to fraction form
13,136,749.28/18,128,350.28 = 7,256,278.08/x - Step 3: Cross multiply
13,136,749.28x = 18,128,350.28 × 7,256,278.08 - Step 4: Simplify right side
13,136,749.28x = 131,544,350,763,325.88 - Step 5: Solve for x
x = 131,544,350,763,325.88/13,136,749.28 - Step 6: Final answer
x = 10,013,462.84
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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.