Finding the Fourth Proportional to 28,364,298.76, 39,143,776.36 and 15,806,481.88
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Solution
The fourth proportional to 28,364,298.76, 39,143,776.36 and 15,806,481.88 is: 21,813,526.82
Step by Step Solution
- Step 1: Write the proportion equation
28,364,298.76 : 39,143,776.36 = 15,806,481.88 : x - Step 2: Convert to fraction form
28,364,298.76/39,143,776.36 = 15,806,481.88/x - Step 3: Cross multiply
28,364,298.76x = 39,143,776.36 × 15,806,481.88 - Step 4: Simplify right side
28,364,298.76x = 618,725,391,670,336.38 - Step 5: Solve for x
x = 618,725,391,670,336.38/28,364,298.76 - Step 6: Final answer
x = 21,813,526.82
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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.