Finding the Fourth Proportional to 15,134,428.86, 20,886,138.99 and 8,609,207.82
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Solution
The fourth proportional to 15,134,428.86, 20,886,138.99 and 8,609,207.82 is: 11,881,063.55
Step by Step Solution
- Step 1: Write the proportion equation
15,134,428.86 : 20,886,138.99 = 8,609,207.82 : x - Step 2: Convert to fraction form
15,134,428.86/20,886,138.99 = 8,609,207.82/x - Step 3: Cross multiply
15,134,428.86x = 20,886,138.99 × 8,609,207.82 - Step 4: Simplify right side
15,134,428.86x = 179,813,111,122,314.91 - Step 5: Solve for x
x = 179,813,111,122,314.91/15,134,428.86 - Step 6: Final answer
x = 11,881,063.55
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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.