Finding the Fourth Proportional to 38,512,309.39, 53,148,272.27 and 21,108,699.21
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Solution
The fourth proportional to 38,512,309.39, 53,148,272.27 and 21,108,699.21 is: 29,130,709.38
Step by Step Solution
- Step 1: Write the proportion equation
38,512,309.39 : 53,148,272.27 = 21,108,699.21 : x - Step 2: Convert to fraction form
38,512,309.39/53,148,272.27 = 21,108,699.21/x - Step 3: Cross multiply
38,512,309.39x = 53,148,272.27 × 21,108,699.21 - Step 4: Simplify right side
38,512,309.39x = 1,121,890,892,507,329 - Step 5: Solve for x
x = 1,121,890,892,507,329/38,512,309.39 - Step 6: Final answer
x = 29,130,709.38
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1.5x scale
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.