Finding the Fourth Proportional to 28,733,628.80, 39,653,247.72 and 15,681,725.84
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Solution
The fourth proportional to 28,733,628.80, 39,653,247.72 and 15,681,725.84 is: 21,641,240.09
Step by Step Solution
- Step 1: Write the proportion equation
28,733,628.80 : 39,653,247.72 = 15,681,725.84 : x - Step 2: Convert to fraction form
28,733,628.80/39,653,247.72 = 15,681,725.84/x - Step 3: Cross multiply
28,733,628.80x = 39,653,247.72 × 15,681,725.84 - Step 4: Simplify right side
28,733,628.80x = 621,831,359,410,645 - Step 5: Solve for x
x = 621,831,359,410,645/28,733,628.80 - Step 6: Final answer
x = 21,641,240.09
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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.