Finding the Fourth Proportional to 13,516,615.88, 18,652,775.48 and 7,321,545.80
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Solution
The fourth proportional to 13,516,615.88, 18,652,775.48 and 7,321,545.80 is: 10,103,649.55
Step by Step Solution
- Step 1: Write the proportion equation
13,516,615.88 : 18,652,775.48 = 7,321,545.80 : x - Step 2: Convert to fraction form
13,516,615.88/18,652,775.48 = 7,321,545.80/x - Step 3: Cross multiply
13,516,615.88x = 18,652,775.48 × 7,321,545.80 - Step 4: Simplify right side
13,516,615.88x = 136,567,149,973,936.98 - Step 5: Solve for x
x = 136,567,149,973,936.98/13,516,615.88 - Step 6: Final answer
x = 10,103,649.55
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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.