Finding the Fourth Proportional to 13,062,981.30, 18,027,376.76 and 7,183,062.99
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Solution
The fourth proportional to 13,062,981.30, 18,027,376.76 and 7,183,062.99 is: 9,912,881.28
Step by Step Solution
- Step 1: Write the proportion equation
13,062,981.30 : 18,027,376.76 = 7,183,062.99 : x - Step 2: Convert to fraction form
13,062,981.30/18,027,376.76 = 7,183,062.99/x - Step 3: Cross multiply
13,062,981.30x = 18,027,376.76 × 7,183,062.99 - Step 4: Simplify right side
13,062,981.30x = 129,491,782,789,095.05 - Step 5: Solve for x
x = 129,491,782,789,095.05/13,062,981.30 - Step 6: Final answer
x = 9,912,881.28
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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.