Finding the Fourth Proportional to 28,040,528.64, 38,695,913.28 and 15,163,472.64
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Solution
The fourth proportional to 28,040,528.64, 38,695,913.28 and 15,163,472.64 is: 20,925,583.46
Step by Step Solution
- Step 1: Write the proportion equation
28,040,528.64 : 38,695,913.28 = 15,163,472.64 : x - Step 2: Convert to fraction form
28,040,528.64/38,695,913.28 = 15,163,472.64/x - Step 3: Cross multiply
28,040,528.64x = 38,695,913.28 × 15,163,472.64 - Step 4: Simplify right side
28,040,528.64x = 586,764,422,301,092.75 - Step 5: Solve for x
x = 586,764,422,301,092.75/28,040,528.64 - Step 6: Final answer
x = 20,925,583.46
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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.