Finding the Fourth Proportional to 14,136,189.28, 19,507,422.30 and 8,638,763.80
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Solution
The fourth proportional to 14,136,189.28, 19,507,422.30 and 8,638,763.80 is: 11,921,176.94
Step by Step Solution
- Step 1: Write the proportion equation
14,136,189.28 : 19,507,422.30 = 8,638,763.80 : x - Step 2: Convert to fraction form
14,136,189.28/19,507,422.30 = 8,638,763.80/x - Step 3: Cross multiply
14,136,189.28x = 19,507,422.30 × 8,638,763.80 - Step 4: Simplify right side
14,136,189.28x = 168,520,013,596,552.75 - Step 5: Solve for x
x = 168,520,013,596,552.75/14,136,189.28 - Step 6: Final answer
x = 11,921,176.94
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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.