Finding the Fourth Proportional to 20,710,585.07, 28,580,638.88 and 11,543,030.99
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Solution
The fourth proportional to 20,710,585.07, 28,580,638.88 and 11,543,030.99 is: 15,929,400.31
Step by Step Solution
- Step 1: Write the proportion equation
20,710,585.07 : 28,580,638.88 = 11,543,030.99 : x - Step 2: Convert to fraction form
20,710,585.07/28,580,638.88 = 11,543,030.99/x - Step 3: Cross multiply
20,710,585.07x = 28,580,638.88 × 11,543,030.99 - Step 4: Simplify right side
20,710,585.07x = 329,907,200,191,793.25 - Step 5: Solve for x
x = 329,907,200,191,793.25/20,710,585.07 - Step 6: Final answer
x = 15,929,400.31
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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.