Finding the Fourth Proportional to 10,357,543.80, 15,536,315.70 and 5,318,695.80
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Solution
The fourth proportional to 10,357,543.80, 15,536,315.70 and 5,318,695.80 is: 7,978,043.70
Step by Step Solution
- Step 1: Write the proportion equation
10,357,543.80 : 15,536,315.70 = 5,318,695.80 : x - Step 2: Convert to fraction form
10,357,543.80/15,536,315.70 = 5,318,695.80/x - Step 3: Cross multiply
10,357,543.80x = 15,536,315.70 × 5,318,695.80 - Step 4: Simplify right side
10,357,543.80x = 82,632,937,061,064.05 - Step 5: Solve for x
x = 82,632,937,061,064.05/10,357,543.80 - Step 6: Final answer
x = 7,978,043.70
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1.5x scale
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.