Finding the Fourth Proportional to 20,380,228.18, 28,124,937.88 and 11,087,851.08
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Solution
The fourth proportional to 20,380,228.18, 28,124,937.88 and 11,087,851.08 is: 15,301,355.81
Step by Step Solution
- Step 1: Write the proportion equation
20,380,228.18 : 28,124,937.88 = 11,087,851.08 : x - Step 2: Convert to fraction form
20,380,228.18/28,124,937.88 = 11,087,851.08/x - Step 3: Cross multiply
20,380,228.18x = 28,124,937.88 × 11,087,851.08 - Step 4: Simplify right side
20,380,228.18x = 311,845,122,847,690.88 - Step 5: Solve for x
x = 311,845,122,847,690.88/20,380,228.18 - Step 6: Final answer
x = 15,301,355.81
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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.