Finding the Fourth Proportional to 15,139,497.84, 20,892,240.42 and 8,612,988.18
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Solution
The fourth proportional to 15,139,497.84, 20,892,240.42 and 8,612,988.18 is: 11,885,772.02
Step by Step Solution
- Step 1: Write the proportion equation
15,139,497.84 : 20,892,240.42 = 8,612,988.18 : x - Step 2: Convert to fraction form
15,139,497.84/20,892,240.42 = 8,612,988.18/x - Step 3: Cross multiply
15,139,497.84x = 20,892,240.42 × 8,612,988.18 - Step 4: Simplify right side
15,139,497.84x = 179,944,619,837,225.44 - Step 5: Solve for x
x = 179,944,619,837,225.44/15,139,497.84 - Step 6: Final answer
x = 11,885,772.02
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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.