Finding the Fourth Proportional to 20,709,207.66, 28,579,679.63 and 11,541,916.02
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Solution
The fourth proportional to 20,709,207.66, 28,579,679.63 and 11,541,916.02 is: 15,928,386.43
Step by Step Solution
- Step 1: Write the proportion equation
20,709,207.66 : 28,579,679.63 = 11,541,916.02 : x - Step 2: Convert to fraction form
20,709,207.66/28,579,679.63 = 11,541,916.02/x - Step 3: Cross multiply
20,709,207.66x = 28,579,679.63 × 11,541,916.02 - Step 4: Simplify right side
20,709,207.66x = 329,864,262,167,964.62 - Step 5: Solve for x
x = 329,864,262,167,964.62/20,709,207.66 - Step 6: Final answer
x = 15,928,386.43
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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.