Finding the Fourth Proportional to 19,664,449.16, 27,121,556.58 and 12,791,126.12
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Solution
The fourth proportional to 19,664,449.16, 27,121,556.58 and 12,791,126.12 is: 17,641,747.70
Step by Step Solution
- Step 1: Write the proportion equation
19,664,449.16 : 27,121,556.58 = 12,791,126.12 : x - Step 2: Convert to fraction form
19,664,449.16/27,121,556.58 = 12,791,126.12/x - Step 3: Cross multiply
19,664,449.16x = 27,121,556.58 × 12,791,126.12 - Step 4: Simplify right side
19,664,449.16x = 346,915,250,785,495.81 - Step 5: Solve for x
x = 346,915,250,785,495.81/19,664,449.16 - Step 6: Final answer
x = 17,641,747.70
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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.