Finding the Fourth Proportional to 13,920,763.36, 19,206,348.72 and 8,115,435.04
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Solution
The fourth proportional to 13,920,763.36, 19,206,348.72 and 8,115,435.04 is: 11,196,790.82
Step by Step Solution
- Step 1: Write the proportion equation
13,920,763.36 : 19,206,348.72 = 8,115,435.04 : x - Step 2: Convert to fraction form
13,920,763.36/19,206,348.72 = 8,115,435.04/x - Step 3: Cross multiply
13,920,763.36x = 19,206,348.72 × 8,115,435.04 - Step 4: Simplify right side
13,920,763.36x = 155,867,875,392,747.12 - Step 5: Solve for x
x = 155,867,875,392,747.12/13,920,763.36 - Step 6: Final answer
x = 11,196,790.82
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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.