Finding the Fourth Proportional to 28,687,950.26, 39,588,358.52 and 15,634,950.11
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Solution
The fourth proportional to 28,687,950.26, 39,588,358.52 and 15,634,950.11 is: 21,575,679.15
Step by Step Solution
- Step 1: Write the proportion equation
28,687,950.26 : 39,588,358.52 = 15,634,950.11 : x - Step 2: Convert to fraction form
28,687,950.26/39,588,358.52 = 15,634,950.11/x - Step 3: Cross multiply
28,687,950.26x = 39,588,358.52 × 15,634,950.11 - Step 4: Simplify right side
28,687,950.26x = 618,962,010,120,876.88 - Step 5: Solve for x
x = 618,962,010,120,876.88/28,687,950.26 - Step 6: Final answer
x = 21,575,679.15
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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.