Finding the Fourth Proportional to 21,256,479.55, 31,889,778.74 and 6,879,547.36
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Solution
The fourth proportional to 21,256,479.55, 31,889,778.74 and 6,879,547.36 is: 10,320,958.49
Step by Step Solution
- Step 1: Write the proportion equation
21,256,479.55 : 31,889,778.74 = 6,879,547.36 : x - Step 2: Convert to fraction form
21,256,479.55/31,889,778.74 = 6,879,547.36/x - Step 3: Cross multiply
21,256,479.55x = 31,889,778.74 × 6,879,547.36 - Step 4: Simplify right side
21,256,479.55x = 219,387,243,141,751.12 - Step 5: Solve for x
x = 219,387,243,141,751.12/21,256,479.55 - Step 6: Final answer
x = 10,320,958.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.