Finding the Fourth Proportional to 13,130,986.76, 19,699,137.46 and 4,611,987.54
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Solution
The fourth proportional to 13,130,986.76, 19,699,137.46 and 4,611,987.54 is: 6,918,914.64
Step by Step Solution
- Step 1: Write the proportion equation
13,130,986.76 : 19,699,137.46 = 4,611,987.54 : x - Step 2: Convert to fraction form
13,130,986.76/19,699,137.46 = 4,611,987.54/x - Step 3: Cross multiply
13,130,986.76x = 19,699,137.46 × 4,611,987.54 - Step 4: Simplify right side
13,130,986.76x = 90,852,176,514,267.25 - Step 5: Solve for x
x = 90,852,176,514,267.25/13,130,986.76 - Step 6: Final answer
x = 6,918,914.64
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.