Finding the Fourth Proportional to 20,238,466.23, 27,929,120.11 and 11,071,108.98
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Solution
The fourth proportional to 20,238,466.23, 27,929,120.11 and 11,071,108.98 is: 15,278,150.47
Step by Step Solution
- Step 1: Write the proportion equation
20,238,466.23 : 27,929,120.11 = 11,071,108.98 : x - Step 2: Convert to fraction form
20,238,466.23/27,929,120.11 = 11,071,108.98/x - Step 3: Cross multiply
20,238,466.23x = 27,929,120.11 × 11,071,108.98 - Step 4: Simplify right side
20,238,466.23x = 309,206,332,313,674 - Step 5: Solve for x
x = 309,206,332,313,674/20,238,466.23 - Step 6: Final answer
x = 15,278,150.47
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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.