Finding the Fourth Proportional to 21,118,103.08, 29,142,981.30 and 11,460,311.08
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Solution
The fourth proportional to 21,118,103.08, 29,142,981.30 and 11,460,311.08 is: 15,815,228.77
Step by Step Solution
- Step 1: Write the proportion equation
21,118,103.08 : 29,142,981.30 = 11,460,311.08 : x - Step 2: Convert to fraction form
21,118,103.08/29,142,981.30 = 11,460,311.08/x - Step 3: Cross multiply
21,118,103.08x = 29,142,981.30 × 11,460,311.08 - Step 4: Simplify right side
21,118,103.08x = 333,987,631,496,622.81 - Step 5: Solve for x
x = 333,987,631,496,622.81/21,118,103.08 - Step 6: Final answer
x = 15,815,228.77
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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.