Finding the Fourth Proportional to 10,658,542.40, 15,987,813.60 and 8,957,931.20
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Solution
The fourth proportional to 10,658,542.40, 15,987,813.60 and 8,957,931.20 is: 13,436,896.80
Step by Step Solution
- Step 1: Write the proportion equation
10,658,542.40 : 15,987,813.60 = 8,957,931.20 : x - Step 2: Convert to fraction form
10,658,542.40/15,987,813.60 = 8,957,931.20/x - Step 3: Cross multiply
10,658,542.40x = 15,987,813.60 × 8,957,931.20 - Step 4: Simplify right side
10,658,542.40x = 143,217,734,267,224.31 - Step 5: Solve for x
x = 143,217,734,267,224.31/10,658,542.40 - Step 6: Final answer
x = 13,436,896.80
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1.5x scale
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.