Finding the Fourth Proportional to 19,989,973.76, 29,984,964.78 and 7,210,477.08
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Solution
The fourth proportional to 19,989,973.76, 29,984,964.78 and 7,210,477.08 is: 10,815,717.11
Step by Step Solution
- Step 1: Write the proportion equation
19,989,973.76 : 29,984,964.78 = 7,210,477.08 : x - Step 2: Convert to fraction form
19,989,973.76/29,984,964.78 = 7,210,477.08/x - Step 3: Cross multiply
19,989,973.76x = 29,984,964.78 × 7,210,477.08 - Step 4: Simplify right side
19,989,973.76x = 216,205,901,290,797.25 - Step 5: Solve for x
x = 216,205,901,290,797.25/19,989,973.76 - Step 6: Final answer
x = 10,815,717.11
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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.