Finding the Fourth Proportional to 19,860,675.40, 29,819,006.70 and 12,302,403.40
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Solution
The fourth proportional to 19,860,675.40, 29,819,006.70 and 12,302,403.40 is: 18,470,945.32
Step by Step Solution
- Step 1: Write the proportion equation
19,860,675.40 : 29,819,006.70 = 12,302,403.40 : x - Step 2: Convert to fraction form
19,860,675.40/29,819,006.70 = 12,302,403.40/x - Step 3: Cross multiply
19,860,675.40x = 29,819,006.70 × 12,302,403.40 - Step 4: Simplify right side
19,860,675.40x = 366,845,449,410,702.81 - Step 5: Solve for x
x = 366,845,449,410,702.81/19,860,675.40 - Step 6: Final answer
x = 18,470,945.32
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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.