Finding the Fourth Proportional to 14,916,482.28, 20,584,538.80 and 8,390,116.15
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Solution
The fourth proportional to 14,916,482.28, 20,584,538.80 and 8,390,116.15 is: 11,578,243.99
Step by Step Solution
- Step 1: Write the proportion equation
14,916,482.28 : 20,584,538.80 = 8,390,116.15 : x - Step 2: Convert to fraction form
14,916,482.28/20,584,538.80 = 8,390,116.15/x - Step 3: Cross multiply
14,916,482.28x = 20,584,538.80 × 8,390,116.15 - Step 4: Simplify right side
14,916,482.28x = 172,706,671,353,745 - Step 5: Solve for x
x = 172,706,671,353,745/14,916,482.28 - Step 6: Final answer
x = 11,578,243.99
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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.