Finding the Fourth Proportional to 13,149,572.79, 18,146,435.03 and 7,348,354.53
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Solution
The fourth proportional to 13,149,572.79, 18,146,435.03 and 7,348,354.53 is: 10,140,742.98
Step by Step Solution
- Step 1: Write the proportion equation
13,149,572.79 : 18,146,435.03 = 7,348,354.53 : x - Step 2: Convert to fraction form
13,149,572.79/18,146,435.03 = 7,348,354.53/x - Step 3: Cross multiply
13,149,572.79x = 18,146,435.03 × 7,348,354.53 - Step 4: Simplify right side
13,149,572.79x = 133,346,438,019,309.41 - Step 5: Solve for x
x = 133,346,438,019,309.41/13,149,572.79 - Step 6: Final answer
x = 10,140,742.98
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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.