Finding the Fourth Proportional to 20,479,368.96, 28,260,987.84 and 11,311,814.88
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Solution
The fourth proportional to 20,479,368.96, 28,260,987.84 and 11,311,814.88 is: 15,610,005.53
Step by Step Solution
- Step 1: Write the proportion equation
20,479,368.96 : 28,260,987.84 = 11,311,814.88 : x - Step 2: Convert to fraction form
20,479,368.96/28,260,987.84 = 11,311,814.88/x - Step 3: Cross multiply
20,479,368.96x = 28,260,987.84 × 11,311,814.88 - Step 4: Simplify right side
20,479,368.96x = 319,683,062,772,011.06 - Step 5: Solve for x
x = 319,683,062,772,011.06/20,479,368.96 - Step 6: Final answer
x = 15,610,005.53
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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.