Finding the Fourth Proportional to 20,553,133.10, 28,363,322.84 and 11,261,055.79
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Solution
The fourth proportional to 20,553,133.10, 28,363,322.84 and 11,261,055.79 is: 15,540,256.53
Step by Step Solution
- Step 1: Write the proportion equation
20,553,133.10 : 28,363,322.84 = 11,261,055.79 : x - Step 2: Convert to fraction form
20,553,133.10/28,363,322.84 = 11,261,055.79/x - Step 3: Cross multiply
20,553,133.10x = 28,363,322.84 × 11,261,055.79 - Step 4: Simplify right side
20,553,133.10x = 319,400,960,763,807.69 - Step 5: Solve for x
x = 319,400,960,763,807.69/20,553,133.10 - Step 6: Final answer
x = 15,540,256.53
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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.