Finding the Fourth Proportional to 20,375,416.26, 28,133,856.99 and 15,658,340.07
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Solution
The fourth proportional to 20,375,416.26, 28,133,856.99 and 15,658,340.07 is: 21,620,638.06
Step by Step Solution
- Step 1: Write the proportion equation
20,375,416.26 : 28,133,856.99 = 15,658,340.07 : x - Step 2: Convert to fraction form
20,375,416.26/28,133,856.99 = 15,658,340.07/x - Step 3: Cross multiply
20,375,416.26x = 28,133,856.99 × 15,658,340.07 - Step 4: Simplify right side
20,375,416.26x = 440,529,500,230,166.56 - Step 5: Solve for x
x = 440,529,500,230,166.56/20,375,416.26 - Step 6: Final answer
x = 21,620,638.06
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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.