Finding the Fourth Proportional to 19,725,157.20, 27,218,359.44 and 10,903,416.78
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Solution
The fourth proportional to 19,725,157.20, 27,218,359.44 and 10,903,416.78 is: 15,045,412.01
Step by Step Solution
- Step 1: Write the proportion equation
19,725,157.20 : 27,218,359.44 = 10,903,416.78 : x - Step 2: Convert to fraction form
19,725,157.20/27,218,359.44 = 10,903,416.78/x - Step 3: Cross multiply
19,725,157.20x = 27,218,359.44 × 10,903,416.78 - Step 4: Simplify right side
19,725,157.20x = 296,773,117,042,167.38 - Step 5: Solve for x
x = 296,773,117,042,167.38/19,725,157.20 - Step 6: Final answer
x = 15,045,412.01
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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.