Finding the Fourth Proportional to 20,441,887.90, 28,210,141.49 and 11,149,457.99
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Solution
The fourth proportional to 20,441,887.90, 28,210,141.49 and 11,149,457.99 is: 15,386,435.38
Step by Step Solution
- Step 1: Write the proportion equation
20,441,887.90 : 28,210,141.49 = 11,149,457.99 : x - Step 2: Convert to fraction form
20,441,887.90/28,210,141.49 = 11,149,457.99/x - Step 3: Cross multiply
20,441,887.90x = 28,210,141.49 × 11,149,457.99 - Step 4: Simplify right side
20,441,887.90x = 314,527,787,237,913 - Step 5: Solve for x
x = 314,527,787,237,913/20,441,887.90 - Step 6: Final answer
x = 15,386,435.38
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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.