Finding the Fourth Proportional to 13,998,644.48, 19,318,041.60 and 7,889,035.52
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Solution
The fourth proportional to 13,998,644.48, 19,318,041.60 and 7,889,035.52 is: 10,886,819.55
Step by Step Solution
- Step 1: Write the proportion equation
13,998,644.48 : 19,318,041.60 = 7,889,035.52 : x - Step 2: Convert to fraction form
13,998,644.48/19,318,041.60 = 7,889,035.52/x - Step 3: Cross multiply
13,998,644.48x = 19,318,041.60 × 7,889,035.52 - Step 4: Simplify right side
13,998,644.48x = 152,400,716,359,237.62 - Step 5: Solve for x
x = 152,400,716,359,237.62/13,998,644.48 - Step 6: Final answer
x = 10,886,819.55
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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.