Finding the Fourth Proportional to 13,118,134.66, 18,102,978.49 and 7,316,911.96
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Solution
The fourth proportional to 13,118,134.66, 18,102,978.49 and 7,316,911.96 is: 10,097,312.10
Step by Step Solution
- Step 1: Write the proportion equation
13,118,134.66 : 18,102,978.49 = 7,316,911.96 : x - Step 2: Convert to fraction form
13,118,134.66/18,102,978.49 = 7,316,911.96/x - Step 3: Cross multiply
13,118,134.66x = 18,102,978.49 × 7,316,911.96 - Step 4: Simplify right side
13,118,134.66x = 132,457,899,825,103.73 - Step 5: Solve for x
x = 132,457,899,825,103.73/13,118,134.66 - Step 6: Final answer
x = 10,097,312.10
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.