Finding the Fourth Proportional to 20,292,243.84, 28,003,289.76 and 11,124,689.76
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Solution
The fourth proportional to 20,292,243.84, 28,003,289.76 and 11,124,689.76 is: 15,352,068.17
Step by Step Solution
- Step 1: Write the proportion equation
20,292,243.84 : 28,003,289.76 = 11,124,689.76 : x - Step 2: Convert to fraction form
20,292,243.84/28,003,289.76 = 11,124,689.76/x - Step 3: Cross multiply
20,292,243.84x = 28,003,289.76 × 11,124,689.76 - Step 4: Simplify right side
20,292,243.84x = 311,527,910,839,384.88 - Step 5: Solve for x
x = 311,527,910,839,384.88/20,292,243.84 - Step 6: Final answer
x = 15,352,068.17
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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.