Finding the Fourth Proportional to 13,708,972.13, 18,920,412 and 8,680,189.02
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Solution
The fourth proportional to 13,708,972.13, 18,920,412 and 8,680,189.02 is: 11,979,946.49
Step by Step Solution
- Step 1: Write the proportion equation
13,708,972.13 : 18,920,412 = 8,680,189.02 : x - Step 2: Convert to fraction form
13,708,972.13/18,920,412 = 8,680,189.02/x - Step 3: Cross multiply
13,708,972.13x = 18,920,412 × 8,680,189.02 - Step 4: Simplify right side
13,708,972.13x = 164,232,752,496,276.22 - Step 5: Solve for x
x = 164,232,752,496,276.22/13,708,972.13 - Step 6: Final answer
x = 11,979,946.49
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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.