Finding the Fourth Proportional to 20,690,582.72, 28,553,889.12 and 11,523,224
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Solution
The fourth proportional to 20,690,582.72, 28,553,889.12 and 11,523,224 is: 15,902,541.99
Step by Step Solution
- Step 1: Write the proportion equation
20,690,582.72 : 28,553,889.12 = 11,523,224 : x - Step 2: Convert to fraction form
20,690,582.72/28,553,889.12 = 11,523,224/x - Step 3: Cross multiply
20,690,582.72x = 28,553,889.12 × 11,523,224 - Step 4: Simplify right side
20,690,582.72x = 329,032,860,400,922.88 - Step 5: Solve for x
x = 329,032,860,400,922.88/20,690,582.72 - Step 6: Final answer
x = 15,902,541.99
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1.5x scale
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.