Finding the Fourth Proportional to 19,513,660, 26,913,687.12 and 13,323,685.60
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Solution
The fourth proportional to 19,513,660, 26,913,687.12 and 13,323,685.60 is: 18,376,332.55
Step by Step Solution
- Step 1: Write the proportion equation
19,513,660 : 26,913,687.12 = 13,323,685.60 : x - Step 2: Convert to fraction form
19,513,660/26,913,687.12 = 13,323,685.60/x - Step 3: Cross multiply
19,513,660x = 26,913,687.12 × 13,323,685.60 - Step 4: Simplify right side
19,513,660x = 358,589,505,523,649.50 - Step 5: Solve for x
x = 358,589,505,523,649.50/19,513,660 - Step 6: Final answer
x = 18,376,332.55
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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.