Finding the Fourth Proportional to 13,209,263.55, 18,228,915.74 and 7,407,920.74
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Solution
The fourth proportional to 13,209,263.55, 18,228,915.74 and 7,407,920.74 is: 10,223,004.67
Step by Step Solution
- Step 1: Write the proportion equation
13,209,263.55 : 18,228,915.74 = 7,407,920.74 : x - Step 2: Convert to fraction form
13,209,263.55/18,228,915.74 = 7,407,920.74/x - Step 3: Cross multiply
13,209,263.55x = 18,228,915.74 × 7,407,920.74 - Step 4: Simplify right side
13,209,263.55x = 135,038,362,978,058.44 - Step 5: Solve for x
x = 135,038,362,978,058.44/13,209,263.55 - Step 6: Final answer
x = 10,223,004.67
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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.