Finding the Fourth Proportional to 13,523,403.60, 18,662,261.40 and 7,328,621.70
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Solution
The fourth proportional to 13,523,403.60, 18,662,261.40 and 7,328,621.70 is: 10,113,478.67
Step by Step Solution
- Step 1: Write the proportion equation
13,523,403.60 : 18,662,261.40 = 7,328,621.70 : x - Step 2: Convert to fraction form
13,523,403.60/18,662,261.40 = 7,328,621.70/x - Step 3: Cross multiply
13,523,403.60x = 18,662,261.40 × 7,328,621.70 - Step 4: Simplify right side
13,523,403.60x = 136,768,653,867,112.38 - Step 5: Solve for x
x = 136,768,653,867,112.38/13,523,403.60 - Step 6: Final answer
x = 10,113,478.67
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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.