Finding the Fourth Proportional to 10,369,219.20, 15,553,828.80 and 8,857,564.80
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Solution
The fourth proportional to 10,369,219.20, 15,553,828.80 and 8,857,564.80 is: 13,286,347.20
Step by Step Solution
- Step 1: Write the proportion equation
10,369,219.20 : 15,553,828.80 = 8,857,564.80 : x - Step 2: Convert to fraction form
10,369,219.20/15,553,828.80 = 8,857,564.80/x - Step 3: Cross multiply
10,369,219.20x = 15,553,828.80 × 8,857,564.80 - Step 4: Simplify right side
10,369,219.20x = 137,769,046,484,106.27 - Step 5: Solve for x
x = 137,769,046,484,106.27/10,369,219.20 - Step 6: Final answer
x = 13,286,347.20
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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.