Finding the Fourth Proportional to 21,242,870.48, 29,310,765 and 12,420,624.08
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Solution
The fourth proportional to 21,242,870.48, 29,310,765 and 12,420,624.08 is: 17,137,890.75
Step by Step Solution
- Step 1: Write the proportion equation
21,242,870.48 : 29,310,765 = 12,420,624.08 : x - Step 2: Convert to fraction form
21,242,870.48/29,310,765 = 12,420,624.08/x - Step 3: Cross multiply
21,242,870.48x = 29,310,765 × 12,420,624.08 - Step 4: Simplify right side
21,242,870.48x = 364,057,993,562,221.19 - Step 5: Solve for x
x = 364,057,993,562,221.19/21,242,870.48 - Step 6: Final answer
x = 17,137,890.75
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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.