Finding the Fourth Proportional to 13,186,136.70, 19,779,205.05 and 12,949,940.70
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Solution
The fourth proportional to 13,186,136.70, 19,779,205.05 and 12,949,940.70 is: 19,424,911.05
Step by Step Solution
- Step 1: Write the proportion equation
13,186,136.70 : 19,779,205.05 = 12,949,940.70 : x - Step 2: Convert to fraction form
13,186,136.70/19,779,205.05 = 12,949,940.70/x - Step 3: Cross multiply
13,186,136.70x = 19,779,205.05 × 12,949,940.70 - Step 4: Simplify right side
13,186,136.70x = 256,139,532,490,640.53 - Step 5: Solve for x
x = 256,139,532,490,640.53/13,186,136.70 - Step 6: Final answer
x = 19,424,911.05
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1.5x scale
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.