Finding the Fourth Proportional to 11,316,890.97, 15,587,559.74 and 8,698,387.67
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Solution
The fourth proportional to 11,316,890.97, 15,587,559.74 and 8,698,387.67 is: 11,980,908.70
Step by Step Solution
- Step 1: Write the proportion equation
11,316,890.97 : 15,587,559.74 = 8,698,387.67 : x - Step 2: Convert to fraction form
11,316,890.97/15,587,559.74 = 8,698,387.67/x - Step 3: Cross multiply
11,316,890.97x = 15,587,559.74 × 8,698,387.67 - Step 4: Simplify right side
11,316,890.97x = 135,586,637,450,065.91 - Step 5: Solve for x
x = 135,586,637,450,065.91/11,316,890.97 - Step 6: Final answer
x = 11,980,908.70
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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.