Finding the Fourth Proportional to 15,406,771.92, 21,261,312.80 and 8,880,357.36
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Solution
The fourth proportional to 15,406,771.92, 21,261,312.80 and 8,880,357.36 is: 12,254,874.45
Step by Step Solution
- Step 1: Write the proportion equation
15,406,771.92 : 21,261,312.80 = 8,880,357.36 : x - Step 2: Convert to fraction form
15,406,771.92/21,261,312.80 = 8,880,357.36/x - Step 3: Cross multiply
15,406,771.92x = 21,261,312.80 × 8,880,357.36 - Step 4: Simplify right side
15,406,771.92x = 188,808,055,606,742.19 - Step 5: Solve for x
x = 188,808,055,606,742.19/15,406,771.92 - Step 6: Final answer
x = 12,254,874.45
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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.