Finding the Fourth Proportional to 15,179,054.80, 20,947,032.96 and 8,209,740.08
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Solution
The fourth proportional to 15,179,054.80, 20,947,032.96 and 8,209,740.08 is: 11,329,407.42
Step by Step Solution
- Step 1: Write the proportion equation
15,179,054.80 : 20,947,032.96 = 8,209,740.08 : x - Step 2: Convert to fraction form
15,179,054.80/20,947,032.96 = 8,209,740.08/x - Step 3: Cross multiply
15,179,054.80x = 20,947,032.96 × 8,209,740.08 - Step 4: Simplify right side
15,179,054.80x = 171,969,696,048,793.03 - Step 5: Solve for x
x = 171,969,696,048,793.03/15,179,054.80 - Step 6: Final answer
x = 11,329,407.42
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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.