Finding the Fourth Proportional to 12,727,820.68, 17,564,790.88 and 7,221,427.28
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Solution
The fourth proportional to 12,727,820.68, 17,564,790.88 and 7,221,427.28 is: 9,965,795.65
Step by Step Solution
- Step 1: Write the proportion equation
12,727,820.68 : 17,564,790.88 = 7,221,427.28 : x - Step 2: Convert to fraction form
12,727,820.68/17,564,790.88 = 7,221,427.28/x - Step 3: Cross multiply
12,727,820.68x = 17,564,790.88 × 7,221,427.28 - Step 4: Simplify right side
12,727,820.68x = 126,842,860,028,327.20 - Step 5: Solve for x
x = 126,842,860,028,327.20/12,727,820.68 - Step 6: Final answer
x = 9,965,795.65
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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.