Finding the Fourth Proportional to 15,132,908.79, 20,883,918.22 and 8,257,768.11
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Solution
The fourth proportional to 15,132,908.79, 20,883,918.22 and 8,257,768.11 is: 11,395,995.06
Step by Step Solution
- Step 1: Write the proportion equation
15,132,908.79 : 20,883,918.22 = 8,257,768.11 : x - Step 2: Convert to fraction form
15,132,908.79/20,883,918.22 = 8,257,768.11/x - Step 3: Cross multiply
15,132,908.79x = 20,883,918.22 × 8,257,768.11 - Step 4: Simplify right side
15,132,908.79x = 172,454,553,868,319.56 - Step 5: Solve for x
x = 172,454,553,868,319.56/15,132,908.79 - Step 6: Final answer
x = 11,395,995.06
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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.