Finding the Fourth Proportional to 28,829,120.76, 39,784,187.34 and 15,776,380.08
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Solution
The fourth proportional to 28,829,120.76, 39,784,187.34 and 15,776,380.08 is: 21,771,404.89
Step by Step Solution
- Step 1: Write the proportion equation
28,829,120.76 : 39,784,187.34 = 15,776,380.08 : x - Step 2: Convert to fraction form
28,829,120.76/39,784,187.34 = 15,776,380.08/x - Step 3: Cross multiply
28,829,120.76x = 39,784,187.34 × 15,776,380.08 - Step 4: Simplify right side
28,829,120.76x = 627,650,460,649,764.25 - Step 5: Solve for x
x = 627,650,460,649,764.25/28,829,120.76 - Step 6: Final answer
x = 21,771,404.89
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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.