Finding the Fourth Proportional to 13,323,278.68, 18,378,449.85 and 8,021,282.47
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Solution
The fourth proportional to 13,323,278.68, 18,378,449.85 and 8,021,282.47 is: 11,064,749.24
Step by Step Solution
- Step 1: Write the proportion equation
13,323,278.68 : 18,378,449.85 = 8,021,282.47 : x - Step 2: Convert to fraction form
13,323,278.68/18,378,449.85 = 8,021,282.47/x - Step 3: Cross multiply
13,323,278.68x = 18,378,449.85 × 8,021,282.47 - Step 4: Simplify right side
13,323,278.68x = 147,418,737,607,579.12 - Step 5: Solve for x
x = 147,418,737,607,579.12/13,323,278.68 - Step 6: Final answer
x = 11,064,749.24
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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.