Finding the Fourth Proportional to 21,615,688,304.72, 29,814,272,269.16 and 19,837,284,639.92
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Solution
The fourth proportional to 21,615,688,304.72, 29,814,272,269.16 and 19,837,284,639.92 is: 27,361,340,383.79
Step by Step Solution
- Step 1: Write the proportion equation
21,615,688,304.72 : 29,814,272,269.16 = 19,837,284,639.92 : x - Step 2: Convert to fraction form
21,615,688,304.72/29,814,272,269.16 = 19,837,284,639.92/x - Step 3: Cross multiply
21,615,688,304.72x = 29,814,272,269.16 × 19,837,284,639.92 - Step 4: Simplify right side
21,615,688,304.72x = 591,434,205,335,400,349,696 - Step 5: Solve for x
x = 591,434,205,335,400,349,696/21,615,688,304.72 - Step 6: Final answer
x = 27,361,340,383.79
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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.