Finding the Fourth Proportional to 11,912,373.77, 17,861,781.13 and 8,130,438.41
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Solution
The fourth proportional to 11,912,373.77, 17,861,781.13 and 8,130,438.41 is: 12,191,030.45
Step by Step Solution
- Step 1: Write the proportion equation
11,912,373.77 : 17,861,781.13 = 8,130,438.41 : x - Step 2: Convert to fraction form
11,912,373.77/17,861,781.13 = 8,130,438.41/x - Step 3: Cross multiply
11,912,373.77x = 17,861,781.13 × 8,130,438.41 - Step 4: Simplify right side
11,912,373.77x = 145,224,111,260,730.22 - Step 5: Solve for x
x = 145,224,111,260,730.22/11,912,373.77 - Step 6: Final answer
x = 12,191,030.45
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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.