Finding the Fourth Proportional to 13,565,640.28, 18,720,579.28 and 7,454,462.44
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Solution
The fourth proportional to 13,565,640.28, 18,720,579.28 and 7,454,462.44 is: 10,287,155.80
Step by Step Solution
- Step 1: Write the proportion equation
13,565,640.28 : 18,720,579.28 = 7,454,462.44 : x - Step 2: Convert to fraction form
13,565,640.28/18,720,579.28 = 7,454,462.44/x - Step 3: Cross multiply
13,565,640.28x = 18,720,579.28 × 7,454,462.44 - Step 4: Simplify right side
13,565,640.28x = 139,551,855,097,802.27 - Step 5: Solve for x
x = 139,551,855,097,802.27/13,565,640.28 - Step 6: Final answer
x = 10,287,155.80
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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.