Finding the Fourth Proportional to 13,125,853.40, 18,331,405 and 13,125,853.40
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Solution
The fourth proportional to 13,125,853.40, 18,331,405 and 13,125,853.40 is: 18,331,405
Step by Step Solution
- Step 1: Write the proportion equation
13,125,853.40 : 18,331,405 = 13,125,853.40 : x - Step 2: Convert to fraction form
13,125,853.40/18,331,405 = 13,125,853.40/x - Step 3: Cross multiply
13,125,853.40x = 18,331,405 × 13,125,853.40 - Step 4: Simplify right side
13,125,853.40x = 240,615,334,646,027 - Step 5: Solve for x
x = 240,615,334,646,027/13,125,853.40 - Step 6: Final answer
x = 18,331,405
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.