Finding the Fourth Proportional to 10,386,051.20, 15,579,076.80 and 8,616,579.20
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Solution
The fourth proportional to 10,386,051.20, 15,579,076.80 and 8,616,579.20 is: 12,924,868.80
Step by Step Solution
- Step 1: Write the proportion equation
10,386,051.20 : 15,579,076.80 = 8,616,579.20 : x - Step 2: Convert to fraction form
10,386,051.20/15,579,076.80 = 8,616,579.20/x - Step 3: Cross multiply
10,386,051.20x = 15,579,076.80 × 8,616,579.20 - Step 4: Simplify right side
10,386,051.20x = 134,238,349,110,082.56 - Step 5: Solve for x
x = 134,238,349,110,082.56/10,386,051.20 - Step 6: Final answer
x = 12,924,868.80
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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.