Finding the Fourth Proportional to 19,879,400.90, 29,819,101.35 and 12,713,039.30
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Solution
The fourth proportional to 19,879,400.90, 29,819,101.35 and 12,713,039.30 is: 19,069,558.95
Step by Step Solution
- Step 1: Write the proportion equation
19,879,400.90 : 29,819,101.35 = 12,713,039.30 : x - Step 2: Convert to fraction form
19,879,400.90/29,819,101.35 = 12,713,039.30/x - Step 3: Cross multiply
19,879,400.90x = 29,819,101.35 × 12,713,039.30 - Step 4: Simplify right side
19,879,400.90x = 379,091,407,353,233.12 - Step 5: Solve for x
x = 379,091,407,353,233.12/19,879,400.90 - Step 6: Final answer
x = 19,069,558.95
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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.