Finding the Fourth Proportional to 20,812,934.97, 28,718,424.09 and 13,072,464.00
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Solution
The fourth proportional to 20,812,934.97, 28,718,424.09 and 13,072,464.00 is: 18,037,848.36
Step by Step Solution
- Step 1: Write the proportion equation
20,812,934.97 : 28,718,424.09 = 13,072,464.00 : x - Step 2: Convert to fraction form
20,812,934.97/28,718,424.09 = 13,072,464.00/x - Step 3: Cross multiply
20,812,934.97x = 28,718,424.09 × 13,072,464.00 - Step 4: Simplify right side
20,812,934.97x = 375,420,564,909,665.62 - Step 5: Solve for x
x = 375,420,564,909,665.62/20,812,934.97 - Step 6: Final answer
x = 18,037,848.36
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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.