Finding the Fourth Proportional to 14,652,478.80, 20,221,662.96 and 8,128,210.14
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Solution
The fourth proportional to 14,652,478.80, 20,221,662.96 and 8,128,210.14 is: 11,217,619.09
Step by Step Solution
- Step 1: Write the proportion equation
14,652,478.80 : 20,221,662.96 = 8,128,210.14 : x - Step 2: Convert to fraction form
14,652,478.80/20,221,662.96 = 8,128,210.14/x - Step 3: Cross multiply
14,652,478.80x = 20,221,662.96 × 8,128,210.14 - Step 4: Simplify right side
14,652,478.80x = 164,365,925,919,134.41 - Step 5: Solve for x
x = 164,365,925,919,134.41/14,652,478.80 - Step 6: Final answer
x = 11,217,619.09
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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.