Finding the Fourth Proportional to 13,130,905.26, 18,122,186.79 and 10,921,871.10
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Solution
The fourth proportional to 13,130,905.26, 18,122,186.79 and 10,921,871.10 is: 15,073,460.99
Step by Step Solution
- Step 1: Write the proportion equation
13,130,905.26 : 18,122,186.79 = 10,921,871.10 : x - Step 2: Convert to fraction form
13,130,905.26/18,122,186.79 = 10,921,871.10/x - Step 3: Cross multiply
13,130,905.26x = 18,122,186.79 × 10,921,871.10 - Step 4: Simplify right side
13,130,905.26x = 197,928,188,170,502.75 - Step 5: Solve for x
x = 197,928,188,170,502.75/13,130,905.26 - Step 6: Final answer
x = 15,073,460.99
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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.