Finding the Fourth Proportional to 20,409,764.90, 28,165,477.08 and 11,242,407.65
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Solution
The fourth proportional to 20,409,764.90, 28,165,477.08 and 11,242,407.65 is: 15,514,523.39
Step by Step Solution
- Step 1: Write the proportion equation
20,409,764.90 : 28,165,477.08 = 11,242,407.65 : x - Step 2: Convert to fraction form
20,409,764.90/28,165,477.08 = 11,242,407.65/x - Step 3: Cross multiply
20,409,764.90x = 28,165,477.08 × 11,242,407.65 - Step 4: Simplify right side
20,409,764.90x = 316,647,774,849,264.25 - Step 5: Solve for x
x = 316,647,774,849,264.25/20,409,764.90 - Step 6: Final answer
x = 15,514,523.39
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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.