Finding the Fourth Proportional to 18,918,815.79, 26,107,964.90 and 10,216,987.68
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Solution
The fourth proportional to 18,918,815.79, 26,107,964.90 and 10,216,987.68 is: 14,099,442.52
Step by Step Solution
- Step 1: Write the proportion equation
18,918,815.79 : 26,107,964.90 = 10,216,987.68 : x - Step 2: Convert to fraction form
18,918,815.79/26,107,964.90 = 10,216,987.68/x - Step 3: Cross multiply
18,918,815.79x = 26,107,964.90 × 10,216,987.68 - Step 4: Simplify right side
18,918,815.79x = 266,744,755,733,172.41 - Step 5: Solve for x
x = 266,744,755,733,172.41/18,918,815.79 - Step 6: Final answer
x = 14,099,442.52
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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.