Finding the Fourth Proportional to 15,106,699.85, 20,847,248.78 and 8,231,181.91
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Solution
The fourth proportional to 15,106,699.85, 20,847,248.78 and 8,231,181.91 is: 11,359,032.66
Step by Step Solution
- Step 1: Write the proportion equation
15,106,699.85 : 20,847,248.78 = 8,231,181.91 : x - Step 2: Convert to fraction form
15,106,699.85/20,847,248.78 = 8,231,181.91/x - Step 3: Cross multiply
15,106,699.85x = 20,847,248.78 × 8,231,181.91 - Step 4: Simplify right side
15,106,699.85x = 171,597,496,937,931.53 - Step 5: Solve for x
x = 171,597,496,937,931.53/15,106,699.85 - Step 6: Final answer
x = 11,359,032.66
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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.