Finding the Fourth Proportional to 10,520,909.40, 14,528,881.99 and 9,947,731.55
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Solution
The fourth proportional to 10,520,909.40, 14,528,881.99 and 9,947,731.55 is: 13,737,350.29
Step by Step Solution
- Step 1: Write the proportion equation
10,520,909.40 : 14,528,881.99 = 9,947,731.55 : x - Step 2: Convert to fraction form
10,520,909.40/14,528,881.99 = 9,947,731.55/x - Step 3: Cross multiply
10,520,909.40x = 14,528,881.99 × 9,947,731.55 - Step 4: Simplify right side
10,520,909.40x = 144,529,417,751,682.03 - Step 5: Solve for x
x = 144,529,417,751,682.03/10,520,909.40 - Step 6: Final answer
x = 13,737,350.29
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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.