Finding the Fourth Proportional to 19,721,216.21, 27,232,728.86 and 12,291,558.06
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Solution
The fourth proportional to 19,721,216.21, 27,232,728.86 and 12,291,558.06 is: 16,973,226.43
Step by Step Solution
- Step 1: Write the proportion equation
19,721,216.21 : 27,232,728.86 = 12,291,558.06 : x - Step 2: Convert to fraction form
19,721,216.21/27,232,728.86 = 12,291,558.06/x - Step 3: Cross multiply
19,721,216.21x = 27,232,728.86 × 12,291,558.06 - Step 4: Simplify right side
19,721,216.21x = 334,732,668,047,779.25 - Step 5: Solve for x
x = 334,732,668,047,779.25/19,721,216.21 - Step 6: Final answer
x = 16,973,226.43
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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.