Finding the Fourth Proportional to 15,132,769.18, 20,886,069.30 and 9,477,482.68
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Solution
The fourth proportional to 15,132,769.18, 20,886,069.30 and 9,477,482.68 is: 13,080,709.66
Step by Step Solution
- Step 1: Write the proportion equation
15,132,769.18 : 20,886,069.30 = 9,477,482.68 : x - Step 2: Convert to fraction form
15,132,769.18/20,886,069.30 = 9,477,482.68/x - Step 3: Cross multiply
15,132,769.18x = 20,886,069.30 × 9,477,482.68 - Step 4: Simplify right side
15,132,769.18x = 197,947,360,044,029.72 - Step 5: Solve for x
x = 197,947,360,044,029.72/15,132,769.18 - Step 6: Final answer
x = 13,080,709.66
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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.