Finding the Fourth Proportional to 20,664,688.14, 28,518,632.55 and 11,497,350.06
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Solution
The fourth proportional to 20,664,688.14, 28,518,632.55 and 11,497,350.06 is: 15,867,101.38
Step by Step Solution
- Step 1: Write the proportion equation
20,664,688.14 : 28,518,632.55 = 11,497,350.06 : x - Step 2: Convert to fraction form
20,664,688.14/28,518,632.55 = 11,497,350.06/x - Step 3: Cross multiply
20,664,688.14x = 28,518,632.55 × 11,497,350.06 - Step 4: Simplify right side
20,664,688.14x = 327,888,701,659,860.50 - Step 5: Solve for x
x = 327,888,701,659,860.50/20,664,688.14 - Step 6: Final answer
x = 15,867,101.38
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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.