Finding the Fourth Proportional to 18,513,642.80, 27,767,904.20 and 5,742,929.20
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Solution
The fourth proportional to 18,513,642.80, 27,767,904.20 and 5,742,929.20 is: 8,613,599.69
Step by Step Solution
- Step 1: Write the proportion equation
18,513,642.80 : 27,767,904.20 = 5,742,929.20 : x - Step 2: Convert to fraction form
18,513,642.80/27,767,904.20 = 5,742,929.20/x - Step 3: Cross multiply
18,513,642.80x = 27,767,904.20 × 5,742,929.20 - Step 4: Simplify right side
18,513,642.80x = 159,469,107,852,982.66 - Step 5: Solve for x
x = 159,469,107,852,982.66/18,513,642.80 - Step 6: Final answer
x = 8,613,599.69
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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.