Finding the Fourth Proportional to 17,579,438.40, 26,377,030.80 and 7,989,880.80
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Solution
The fourth proportional to 17,579,438.40, 26,377,030.80 and 7,989,880.80 is: 11,988,399.58
Step by Step Solution
- Step 1: Write the proportion equation
17,579,438.40 : 26,377,030.80 = 7,989,880.80 : x - Step 2: Convert to fraction form
17,579,438.40/26,377,030.80 = 7,989,880.80/x - Step 3: Cross multiply
17,579,438.40x = 26,377,030.80 × 7,989,880.80 - Step 4: Simplify right side
17,579,438.40x = 210,749,331,949,928.66 - Step 5: Solve for x
x = 210,749,331,949,928.66/17,579,438.40 - Step 6: Final answer
x = 11,988,399.58
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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.