Finding the Fourth Proportional to 20,698,769.19, 28,564,490.41 and 11,406,672.66
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Solution
The fourth proportional to 20,698,769.19, 28,564,490.41 and 11,406,672.66 is: 15,741,312.39
Step by Step Solution
- Step 1: Write the proportion equation
20,698,769.19 : 28,564,490.41 = 11,406,672.66 : x - Step 2: Convert to fraction form
20,698,769.19/28,564,490.41 = 11,406,672.66/x - Step 3: Cross multiply
20,698,769.19x = 28,564,490.41 × 11,406,672.66 - Step 4: Simplify right side
20,698,769.19x = 325,825,791,885,179.31 - Step 5: Solve for x
x = 325,825,791,885,179.31/20,698,769.19 - Step 6: Final answer
x = 15,741,312.39
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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.