Finding the Fourth Proportional to 19,813,434.50, 27,317,228.33 and 12,831,775.99
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Solution
The fourth proportional to 19,813,434.50, 27,317,228.33 and 12,831,775.99 is: 17,691,458.52
Step by Step Solution
- Step 1: Write the proportion equation
19,813,434.50 : 27,317,228.33 = 12,831,775.99 : x - Step 2: Convert to fraction form
19,813,434.50/27,317,228.33 = 12,831,775.99/x - Step 3: Cross multiply
19,813,434.50x = 27,317,228.33 × 12,831,775.99 - Step 4: Simplify right side
19,813,434.50x = 350,528,554,562,028.19 - Step 5: Solve for x
x = 350,528,554,562,028.19/19,813,434.50 - Step 6: Final answer
x = 17,691,458.52
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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.