Finding the Fourth Proportional to 13,221,766.62, 18,228,497.58 and 8,630,116.38
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Solution
The fourth proportional to 13,221,766.62, 18,228,497.58 and 8,630,116.38 is: 11,898,111.66
Step by Step Solution
- Step 1: Write the proportion equation
13,221,766.62 : 18,228,497.58 = 8,630,116.38 : x - Step 2: Convert to fraction form
13,221,766.62/18,228,497.58 = 8,630,116.38/x - Step 3: Cross multiply
13,221,766.62x = 18,228,497.58 × 8,630,116.38 - Step 4: Simplify right side
13,221,766.62x = 157,314,055,547,948.38 - Step 5: Solve for x
x = 157,314,055,547,948.38/13,221,766.62 - Step 6: Final answer
x = 11,898,111.66
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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.