Finding the Fourth Proportional to 19,708,830.80, 29,563,246.20 and 12,984,837.20
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Solution
The fourth proportional to 19,708,830.80, 29,563,246.20 and 12,984,837.20 is: 19,477,255.80
Step by Step Solution
- Step 1: Write the proportion equation
19,708,830.80 : 29,563,246.20 = 12,984,837.20 : x - Step 2: Convert to fraction form
19,708,830.80/29,563,246.20 = 12,984,837.20/x - Step 3: Cross multiply
19,708,830.80x = 29,563,246.20 × 12,984,837.20 - Step 4: Simplify right side
19,708,830.80x = 383,873,939,010,518.62 - Step 5: Solve for x
x = 383,873,939,010,518.62/19,708,830.80 - Step 6: Final answer
x = 19,477,255.80
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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.