Finding the Fourth Proportional to 10,921,237.80, 16,381,856.70 and 10,248,079.20
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Solution
The fourth proportional to 10,921,237.80, 16,381,856.70 and 10,248,079.20 is: 15,372,118.80
Step by Step Solution
- Step 1: Write the proportion equation
10,921,237.80 : 16,381,856.70 = 10,248,079.20 : x - Step 2: Convert to fraction form
10,921,237.80/16,381,856.70 = 10,248,079.20/x - Step 3: Cross multiply
10,921,237.80x = 16,381,856.70 × 10,248,079.20 - Step 4: Simplify right side
10,921,237.80x = 167,882,564,904,650.62 - Step 5: Solve for x
x = 167,882,564,904,650.62/10,921,237.80 - Step 6: Final answer
x = 15,372,118.80
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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.