Finding the Fourth Proportional to 12,775,404.42, 17,630,129.70 and 7,268,779.14
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Solution
The fourth proportional to 12,775,404.42, 17,630,129.70 and 7,268,779.14 is: 10,030,955.95
Step by Step Solution
- Step 1: Write the proportion equation
12,775,404.42 : 17,630,129.70 = 7,268,779.14 : x - Step 2: Convert to fraction form
12,775,404.42/17,630,129.70 = 7,268,779.14/x - Step 3: Cross multiply
12,775,404.42x = 17,630,129.70 × 7,268,779.14 - Step 4: Simplify right side
12,775,404.42x = 128,149,518,998,854.45 - Step 5: Solve for x
x = 128,149,518,998,854.45/12,775,404.42 - Step 6: Final answer
x = 10,030,955.95
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1.5x scale
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.