Finding the Fourth Proportional to 15,297,072.88, 21,111,485.49 and 11,422,867.99
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Solution
The fourth proportional to 15,297,072.88, 21,111,485.49 and 11,422,867.99 is: 15,764,696.53
Step by Step Solution
- Step 1: Write the proportion equation
15,297,072.88 : 21,111,485.49 = 11,422,867.99 : x - Step 2: Convert to fraction form
15,297,072.88/21,111,485.49 = 11,422,867.99/x - Step 3: Cross multiply
15,297,072.88x = 21,111,485.49 × 11,422,867.99 - Step 4: Simplify right side
15,297,072.88x = 241,153,711,719,513 - Step 5: Solve for x
x = 241,153,711,719,513/15,297,072.88 - Step 6: Final answer
x = 15,764,696.53
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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.