Finding the Fourth Proportional to 13,205,519.19, 18,223,385.49 and 7,404,282.99
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Solution
The fourth proportional to 13,205,519.19, 18,223,385.49 and 7,404,282.99 is: 10,217,781.01
Step by Step Solution
- Step 1: Write the proportion equation
13,205,519.19 : 18,223,385.49 = 7,404,282.99 : x - Step 2: Convert to fraction form
13,205,519.19/18,223,385.49 = 7,404,282.99/x - Step 3: Cross multiply
13,205,519.19x = 18,223,385.49 × 7,404,282.99 - Step 4: Simplify right side
13,205,519.19x = 134,931,103,203,819.81 - Step 5: Solve for x
x = 134,931,103,203,819.81/13,205,519.19 - Step 6: Final answer
x = 10,217,781.01
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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.