Finding the Fourth Proportional to 13,562,117.52, 18,715,987.20 and 7,450,777.68
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Solution
The fourth proportional to 13,562,117.52, 18,715,987.20 and 7,450,777.68 is: 10,282,218.80
Step by Step Solution
- Step 1: Write the proportion equation
13,562,117.52 : 18,715,987.20 = 7,450,777.68 : x - Step 2: Convert to fraction form
13,562,117.52/18,715,987.20 = 7,450,777.68/x - Step 3: Cross multiply
13,562,117.52x = 18,715,987.20 × 7,450,777.68 - Step 4: Simplify right side
13,562,117.52x = 139,448,659,688,925.69 - Step 5: Solve for x
x = 139,448,659,688,925.69/13,562,117.52 - Step 6: Final answer
x = 10,282,218.80
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1.5x scale
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.