Finding the Fourth Proportional to 13,286,266.15, 18,335,435.91 and 7,779,125.75
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Solution
The fourth proportional to 13,286,266.15, 18,335,435.91 and 7,779,125.75 is: 10,735,421.07
Step by Step Solution
- Step 1: Write the proportion equation
13,286,266.15 : 18,335,435.91 = 7,779,125.75 : x - Step 2: Convert to fraction form
13,286,266.15/18,335,435.91 = 7,779,125.75/x - Step 3: Cross multiply
13,286,266.15x = 18,335,435.91 × 7,779,125.75 - Step 4: Simplify right side
13,286,266.15x = 142,633,661,633,030.56 - Step 5: Solve for x
x = 142,633,661,633,030.56/13,286,266.15 - Step 6: Final answer
x = 10,735,421.07
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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.