Finding the Fourth Proportional to 21,021,091.92, 29,009,148.84 and 11,363,299.92
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Solution
The fourth proportional to 21,021,091.92, 29,009,148.84 and 11,363,299.92 is: 15,681,376.59
Step by Step Solution
- Step 1: Write the proportion equation
21,021,091.92 : 29,009,148.84 = 11,363,299.92 : x - Step 2: Convert to fraction form
21,021,091.92/29,009,148.84 = 11,363,299.92/x - Step 3: Cross multiply
21,021,091.92x = 29,009,148.84 × 11,363,299.92 - Step 4: Simplify right side
21,021,091.92x = 329,639,658,692,840.06 - Step 5: Solve for x
x = 329,639,658,692,840.06/21,021,091.92 - Step 6: Final answer
x = 15,681,376.59
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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.