Finding the Fourth Proportional to 28,012,512.12, 38,657,266.80 and 15,135,456.12
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Solution
The fourth proportional to 28,012,512.12, 38,657,266.80 and 15,135,456.12 is: 20,886,929.49
Step by Step Solution
- Step 1: Write the proportion equation
28,012,512.12 : 38,657,266.80 = 15,135,456.12 : x - Step 2: Convert to fraction form
28,012,512.12/38,657,266.80 = 15,135,456.12/x - Step 3: Cross multiply
28,012,512.12x = 38,657,266.80 × 15,135,456.12 - Step 4: Simplify right side
28,012,512.12x = 585,095,365,370,532.75 - Step 5: Solve for x
x = 585,095,365,370,532.75/28,012,512.12 - Step 6: Final answer
x = 20,886,929.49
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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.