Finding the Fourth Proportional to 18,988,508.61, 26,238,901.19 and 13,822,902.09
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Solution
The fourth proportional to 18,988,508.61, 26,238,901.19 and 13,822,902.09 is: 19,100,908.32
Step by Step Solution
- Step 1: Write the proportion equation
18,988,508.61 : 26,238,901.19 = 13,822,902.09 : x - Step 2: Convert to fraction form
18,988,508.61/26,238,901.19 = 13,822,902.09/x - Step 3: Cross multiply
18,988,508.61x = 26,238,901.19 × 13,822,902.09 - Step 4: Simplify right side
18,988,508.61x = 362,697,762,098,554.50 - Step 5: Solve for x
x = 362,697,762,098,554.50/18,988,508.61 - Step 6: Final answer
x = 19,100,908.32
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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.