Finding the Fourth Proportional to 19,725,028.80, 29,587,543.20 and 13,640,619.84
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Solution
The fourth proportional to 19,725,028.80, 29,587,543.20 and 13,640,619.84 is: 20,460,929.76
Step by Step Solution
- Step 1: Write the proportion equation
19,725,028.80 : 29,587,543.20 = 13,640,619.84 : x - Step 2: Convert to fraction form
19,725,028.80/29,587,543.20 = 13,640,619.84/x - Step 3: Cross multiply
19,725,028.80x = 29,587,543.20 × 13,640,619.84 - Step 4: Simplify right side
19,725,028.80x = 403,592,428,790,777.06 - Step 5: Solve for x
x = 403,592,428,790,777.06/19,725,028.80 - Step 6: Final answer
x = 20,460,929.76
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.