Finding the Fourth Proportional to 13,415,660.88, 18,513,321.36 and 7,834,867.20
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Solution
The fourth proportional to 13,415,660.88, 18,513,321.36 and 7,834,867.20 is: 10,811,946.99
Step by Step Solution
- Step 1: Write the proportion equation
13,415,660.88 : 18,513,321.36 = 7,834,867.20 : x - Step 2: Convert to fraction form
13,415,660.88/18,513,321.36 = 7,834,867.20/x - Step 3: Cross multiply
13,415,660.88x = 18,513,321.36 × 7,834,867.20 - Step 4: Simplify right side
13,415,660.88x = 145,049,414,286,523.41 - Step 5: Solve for x
x = 145,049,414,286,523.41/13,415,660.88 - Step 6: Final answer
x = 10,811,946.99
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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.