Finding the Fourth Proportional to 28,905,743.99, 39,892,449.38 and 15,855,525.15
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Solution
The fourth proportional to 28,905,743.99, 39,892,449.38 and 15,855,525.15 is: 21,882,008.46
Step by Step Solution
- Step 1: Write the proportion equation
28,905,743.99 : 39,892,449.38 = 15,855,525.15 : x - Step 2: Convert to fraction form
28,905,743.99/39,892,449.38 = 15,855,525.15/x - Step 3: Cross multiply
28,905,743.99x = 39,892,449.38 × 15,855,525.15 - Step 4: Simplify right side
28,905,743.99x = 632,515,734,360,414.25 - Step 5: Solve for x
x = 632,515,734,360,414.25/28,905,743.99 - Step 6: Final answer
x = 21,882,008.46
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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.