Finding the Fourth Proportional to 28,687,648.10, 39,587,801.90 and 15,634,626.99
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Solution
The fourth proportional to 28,687,648.10, 39,587,801.90 and 15,634,626.99 is: 21,575,157.15
Step by Step Solution
- Step 1: Write the proportion equation
28,687,648.10 : 39,587,801.90 = 15,634,626.99 : x - Step 2: Convert to fraction form
28,687,648.10/39,587,801.90 = 15,634,626.99/x - Step 3: Cross multiply
28,687,648.10x = 39,587,801.90 × 15,634,626.99 - Step 4: Simplify right side
28,687,648.10x = 618,940,515,833,886 - Step 5: Solve for x
x = 618,940,515,833,886/28,687,648.10 - Step 6: Final answer
x = 21,575,157.15
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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.