Finding the Fourth Proportional to 28,433,375.18, 39,238,030.93 and 15,380,603.98
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Solution
The fourth proportional to 28,433,375.18, 39,238,030.93 and 15,380,603.98 is: 21,225,218.99
Step by Step Solution
- Step 1: Write the proportion equation
28,433,375.18 : 39,238,030.93 = 15,380,603.98 : x - Step 2: Convert to fraction form
28,433,375.18/39,238,030.93 = 15,380,603.98/x - Step 3: Cross multiply
28,433,375.18x = 39,238,030.93 × 15,380,603.98 - Step 4: Simplify right side
28,433,375.18x = 603,504,614,689,321.12 - Step 5: Solve for x
x = 603,504,614,689,321.12/28,433,375.18 - Step 6: Final answer
x = 21,225,218.99
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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.