Finding the Fourth Proportional to 13,203,211.88, 18,220,497.70 and 7,402,238.12
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Solution
The fourth proportional to 13,203,211.88, 18,220,497.70 and 7,402,238.12 is: 10,215,125.22
Step by Step Solution
- Step 1: Write the proportion equation
13,203,211.88 : 18,220,497.70 = 7,402,238.12 : x - Step 2: Convert to fraction form
13,203,211.88/18,220,497.70 = 7,402,238.12/x - Step 3: Cross multiply
13,203,211.88x = 18,220,497.70 × 7,402,238.12 - Step 4: Simplify right side
13,203,211.88x = 134,872,462,640,312.33 - Step 5: Solve for x
x = 134,872,462,640,312.33/13,203,211.88 - Step 6: Final answer
x = 10,215,125.22
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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.