Finding the Fourth Proportional to 28,396,630.15, 39,187,360.07 and 15,343,889.02
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Solution
The fourth proportional to 28,396,630.15, 39,187,360.07 and 15,343,889.02 is: 21,174,572.50
Step by Step Solution
- Step 1: Write the proportion equation
28,396,630.15 : 39,187,360.07 = 15,343,889.02 : x - Step 2: Convert to fraction form
28,396,630.15/39,187,360.07 = 15,343,889.02/x - Step 3: Cross multiply
28,396,630.15x = 39,187,360.07 × 15,343,889.02 - Step 4: Simplify right side
28,396,630.15x = 601,286,503,900,859.38 - Step 5: Solve for x
x = 601,286,503,900,859.38/28,396,630.15 - Step 6: Final answer
x = 21,174,572.50
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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.