Finding the Fourth Proportional to 15,312,817.58, 21,133,177.42 and 11,438,612.70
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Solution
The fourth proportional to 15,312,817.58, 21,133,177.42 and 11,438,612.70 is: 15,786,397.92
Step by Step Solution
- Step 1: Write the proportion equation
15,312,817.58 : 21,133,177.42 = 11,438,612.70 : x - Step 2: Convert to fraction form
15,312,817.58/21,133,177.42 = 11,438,612.70/x - Step 3: Cross multiply
15,312,817.58x = 21,133,177.42 × 11,438,612.70 - Step 4: Simplify right side
15,312,817.58x = 241,734,231,627,765.25 - Step 5: Solve for x
x = 241,734,231,627,765.25/15,312,817.58 - Step 6: Final answer
x = 15,786,397.92
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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.