Finding the Fourth Proportional to 13,121,710.40, 19,682,565.60 and 8,056,596.80
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Solution
The fourth proportional to 13,121,710.40, 19,682,565.60 and 8,056,596.80 is: 12,084,895.20
Step by Step Solution
- Step 1: Write the proportion equation
13,121,710.40 : 19,682,565.60 = 8,056,596.80 : x - Step 2: Convert to fraction form
13,121,710.40/19,682,565.60 = 8,056,596.80/x - Step 3: Cross multiply
13,121,710.40x = 19,682,565.60 × 8,056,596.80 - Step 4: Simplify right side
13,121,710.40x = 158,574,495,028,750.09 - Step 5: Solve for x
x = 158,574,495,028,750.09/13,121,710.40 - Step 6: Final answer
x = 12,084,895.20
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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.