Finding the Fourth Proportional to 19,887,091.57, 27,443,915.49 and 11,185,260.76
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Solution
The fourth proportional to 19,887,091.57, 27,443,915.49 and 11,185,260.76 is: 15,435,507.50
Step by Step Solution
- Step 1: Write the proportion equation
19,887,091.57 : 27,443,915.49 = 11,185,260.76 : x - Step 2: Convert to fraction form
19,887,091.57/27,443,915.49 = 11,185,260.76/x - Step 3: Cross multiply
19,887,091.57x = 27,443,915.49 × 11,185,260.76 - Step 4: Simplify right side
19,887,091.57x = 306,967,351,031,053.12 - Step 5: Solve for x
x = 306,967,351,031,053.12/19,887,091.57 - Step 6: Final answer
x = 15,435,507.50
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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.