Finding the Fourth Proportional to 20,361,430.24, 28,098,521.78 and 11,193,992.80
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Solution
The fourth proportional to 20,361,430.24, 28,098,521.78 and 11,193,992.80 is: 15,447,571.55
Step by Step Solution
- Step 1: Write the proportion equation
20,361,430.24 : 28,098,521.78 = 11,193,992.80 : x - Step 2: Convert to fraction form
20,361,430.24/28,098,521.78 = 11,193,992.80/x - Step 3: Cross multiply
20,361,430.24x = 28,098,521.78 × 11,193,992.80 - Step 4: Simplify right side
20,361,430.24x = 314,534,650,495,963.19 - Step 5: Solve for x
x = 314,534,650,495,963.19/20,361,430.24 - Step 6: Final answer
x = 15,447,571.55
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.