Finding the Fourth Proportional to 13,376,668.70, 18,459,897.28 and 7,265,097.20
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Solution
The fourth proportional to 13,376,668.70, 18,459,897.28 and 7,265,097.20 is: 10,025,885.45
Step by Step Solution
- Step 1: Write the proportion equation
13,376,668.70 : 18,459,897.28 = 7,265,097.20 : x - Step 2: Convert to fraction form
13,376,668.70/18,459,897.28 = 7,265,097.20/x - Step 3: Cross multiply
13,376,668.70x = 18,459,897.28 × 7,265,097.20 - Step 4: Simplify right side
13,376,668.70x = 134,112,948,041,215.62 - Step 5: Solve for x
x = 134,112,948,041,215.62/13,376,668.70 - Step 6: Final answer
x = 10,025,885.45
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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.